SUMMIT AUTOMOTIVE - Key Persons


Alena Lambert

Job Titles:
  • BDC Specialist
Alena has been in the Auto Industry for the past two years. She grew up in Fond du Lac and has a Daughter. When she is not busy scheduling appointments and making follow up calls to our customers she enjoys spending time with her Daughter and Family. She also loves coffee and enjoys spending time with her 2 Dogs outdoors.

Andrew Stern

Job Titles:
  • General Sales Manager
Andrew has been in the automotive industry for 15 years. He takes pride in giving each guest a great experience and to make finding your next vehicle enjoyable. He received his bachelor's degree from UW-Oshkosh and is a Titan football alumni. Hail Titans! He enjoys soaking up the sun on the golf course, Wisconsin sports teams, and spending time with family.

Austin Oehlke

Job Titles:
  • Product Specialist
Austin was born and raised in Wisconsin and has been in Fond du Lac the last 10 years. He loves to spend time with his family, friends, and his dogs! His passion is sports and sport cars. Austin enjoys some friendly competition, but his ultimate goals is to help his guests achieve their car goals.

Brad Wasieleski

Job Titles:
  • Product Specialist
Brad has been involved in vehicle sales for over 20 years. He spent 25 years in the recreation vehicle industry. Brand and his wife Christy have two sons Colton and Carson and a yellow lab named Yukon. Brad enjoys hunting, playing golf, football and spending time with family and friends. He looks forward to giving the best possible customer service experience at Summit Auto.

Brett Schmitz

Job Titles:
  • Used Inventory Production Manager
Brett handles the website and all inventory including pictures and videos. Some other duties include network administrator and used vehicle expediter. He is a graduate of the University of Wisconsin Whitewater where he majored in Computer End-User Technologies. Brett began his career in the Automotive Industry full time in 2006. He has a large automobile knowledge spanning many makes, models and years. Brett grew up in Chilton, Wisconsin and moved to Fond du Lac in 2006. Brett has been with Summit Automotive since 2013 and enjoys the fast pace of the car market and likes the challenges that arise on a daily basis. He also created and manages the dealership's youtube channel that has over 18.1 million views and over 28,100 Subscribers and gets over 11,000 views a day! You can check out his channel at Summit Youtube Channel. Remember to like, subscribe and share. In his spare time he enjoys spending time with his wife Ashley and their twin boys David and Taylor.

Brittany Hopkins

Job Titles:
  • BDC Specialist
Brittany is part of our amazing Business Development Team and handles customer communications with our sales team. After growing up in Oakfield, Brittany has spent time living in Oregon, Texas and France. She graduated from UW-Stevens Point with a degree in International Studies, French and Political Science. A fan of traveling, animals, and traveling animals, she enjoys spending time with her husband and son, gardening, off-roading and bird watching. An active advocate for the Fond du Lac area, Brittany is a member of the Board of the Friends of Horicon Marsh Education & Visitor Center and an active volunteer in the community.

Chris Olig

Job Titles:
  • Product Specialist
Chris has lived in the Fond du Lac area his whole life. He is married to his wife Lisa and they have 2 children, Karly and Kegan. Chris has been in the automotive sales profession for over 22 years. His "laid-back" attitude has led to great success! He has a huge passion for all sports with his favorites being volleyball and golf. He also enjoys hunting, fishing and kayaking.

Colin Choby

Job Titles:
  • Business Manager
Colin has been in the car industry for the past 16 years with 9 of those years in the finance department. He grew up in Lake Geneva and now resides in West Bend. When Colin is not hard at work getting you the best loan possible he enjoys spending time with his wife and 4 children at home.

Crista Lueptow

Job Titles:
  • BDC Specialist
Crista has been in the automotive industry for over 10 years from parts, to service and now apart of the Business Development Team here at Summit. She was originally from the U.P. and then was raised in Beaver Dam and has been in Fond du Lac for over a decade now. Outside of work she enjoys crafts like knitting and cross stitch. Her and her fiancé have 3 cats and a blue heeler puppy named Lola.

Dave Reilly

Job Titles:
  • Business Manager
Dave has been in the automotive industry since 2004 with most of them as a Business Manager. He is dedicated go above and beyond to make sure your customer experience is positive. When not in the office he enjoys road biking with his wife Jaime, hiking with his dog Bailey and spending time with his daughter (and adventure buddy) Lauren, his son Max and his grandson Asher.

Geoff Kuitert

Job Titles:
  • Service Writer
Born and raised in Fond du Lac, Geoff graduated from UW-Oshkosh in December 2008 and started as the Manager of the Express Lube in January 2009. He has been a part of the dealership since 2000. He enjoys playing basketball, golf and a good movie in his spare time.

Jace Braun

Job Titles:
  • Express Lube Advisor
Jace was born and raised in Fond du Lac. He has been in the automotive industry for 4 years, ranging from express lane, detailing, supervising, and service advisor. He enjoys music festivals/concerts, working on his project car, and downhill boarding.

Jamie Hansen

Job Titles:
  • Commercial / Fleet Manager
Jamie has been in the automotive industry for 5 years. 3 of which she spent as a sales representative upfitting vehicles from light duty to heavy duty quad axle dump trucks. She has a huge passion for animals. When she is not at work, she is cooking food and spending time with her fiancé(Dustin), son(Brayden) and dog(Malakai). They enjoy taking trips up-north and riding dirt bikes.

Jennifer Preston

Job Titles:
  • Service Director
Jennifer is the Service Director of Summit Chrysler Dodge Jeep Ram. She is new to the Fond du lac community relocating from Minneapolis, MN. A driven leader working to excel at client experience by building a strong team putting customers at the forefront of the service department. In her free time she loves spending time with her Daughter and family.

Jennifer Schaub

Job Titles:
  • Administrative Assistant
Jennifer is the voice you hear when you call Summit Automotive. She has been in customer service for more than 30 years. She strives to make customers happy and knows a smile goes a long way! Jennifer grew up in North Fond du Lac and studied Marketing at Moraine Park Technical College. In her spare time she loves to spend with her son and significant other Nathan. She loves to go four wheeling, hiking, biking, trap shooting! Jennifer follows the rule of enjoying life and the golden rule. Treat others the way you want to be treated.

Jesse Slechta

Job Titles:
  • Product Specialist
Jesse is 25 years old and has been selling cars since he was 19. He is a big car enthusiast - performance cars, trucks, etc. you name it, he probably knows all about it! Jesse lived in Australia when he was 3 months old up until he was 7. In his free time he loves spending time with family and being on the lake when he can.

Jesse Zepeda

Job Titles:
  • Service Advisor
Jesse has been in the automotive industry for a year and a half. In his free time he enjoys playing softball, golf, fantasy sports and spending time with his family and friends.

Joel Zerbel - COO

Job Titles:
  • Chief Operating Officer
Joel is Chief Operating Officer at Summit Automotive. Joel has over 30 years of automobile experience. Joel and his wife Deb have 4 children, Sam, Sarah, Grace and Isaiah and a Golden Retriever Jasper. Deb is a Special Education teacher locally. In his spare time, he enjoys hunting, skiing and spending time in northern Wisconsin with his family. Joel believes it is important to give back to the communities that they serve. He is involved with several local organizations and charities that provide assistance and programs to local children and families in need.

Jordan Kollmorgan

Job Titles:
  • Assistant
  • Parts Manager
Jordan is a native of Fond du Lac. He has been with Summit Automotive since 2013. He enjoys golfing and going to concerts. Jordan loves the outdoors when he is not at Summit providing excellent parts customer service.

Katie Luttenberger - CMO

Job Titles:
  • Director of Marketing
Katie was born and raised in Fond du Lac, WI. She loves spending time with her dog, friends, and family. When she's not at work she's either attending concerts, thinking of the next place she wants to travel to, or snuggling up with her pup at home. Katie loves being creative and producing content that will help not only Summit but the community as well. For what's happening at Summit be sure to follow our Social Channels!

Kayla Boersma

Job Titles:
  • Business Development Director
Kayla has been involved in the auto industry for the past 7 years. She grew up in Fond du Lac and attended college at UW-Milwaukee. She has recently joined the Summit Auto Group to lead our Sales and Service Business Development Team. She's obsessed with all things coffee, food, and books - and loves spending her free time with her husband Josh, their 4 boys, and their boxer, Ringo.

Lori Heisler

Job Titles:
  • Parts Director
Lori was born and raised in Fond du Lac. She has been in the automotive business since 1977. Lori joined the great team at Summit Chrysler Dodge Jeep Ram in 2008. She is married to Wayne and they have 2 amazing children, Keith, Katie (husband Kris) and two beautiful granddaughters. In her free time, Lori enjoys spending time with her family, reading, bicycling and working in her yard.

Mark Phillips

Job Titles:
  • Used Car Director
Mark has been in the Automotive Industry since 2000. He has an extensive background in trucks. Mark grew up in Oakfield and has lived in FL since 2006. When he's not at work, he enjoys home improvement projects and of course, golfing!

Marty Krepsky

Job Titles:
  • Product Specialist
Marty has been in the Automotive business for over 30 years with an emphasis on customer service and providing a great buying experience. He has experience selling all brands and will make sure you get the type of vehicle best suited to your needs. He has held positions from Sales Manager to General Manager so you can be assured he knows his business and can use that experience to make your visit productive and without hassle. He is very excited about joining the Summit Automotive group because of the friendly atmosphere and customer comes first attitude.

Mason Aird

Job Titles:
  • Product Specialist
Mason started at Summit in 2018 as a part time detailer at the age of 16. He lived in Oshkosh for 5 years and then moved to Fond du Lac. When Mason is not at work he is usually hanging out with his dog. He also enjoys everything outdoors including Hunting, Snowmobiling, Boating, and Golf.

Matt Richardson

Job Titles:
  • Express Lube Advisor
Matt was born and raised in Fond du Lac, WI. He has been in the automotive industry for four years with being a technician to now being a service advisor. In his free time he enjoys spending time with his family and fiance Sara. If he's not at work he's at the local pond/lake fishing or fixing his car.

Matt Weinberg - President

Job Titles:
  • President
Matt was born and raised in Wisconsin. He graduated from UW Stout where he met his wife.

Michael Marusich

Job Titles:
  • Product Specialist
Michael has been in sales for about 4 years and has loved every bit of it. He loves working with customers to find them the perfect vehicle that fits their needs. In his spare time he enjoys spending time with his daughter who is 1, his wife and two dogs. In the summer months he enjoys going camping up north.

Mike Berg - CEO

Job Titles:
  • CEO
Mike is CEO and owner of Summit Chrysler Dodge Jeep Ram. He started in the car business when his Grandfather, Bill Gores (Founder of Holiday) asked him to wash cars in 1974. He's STILL here! Mike and his wife, Nancy have 3 children. He enjoys hunting, boating, paddle boarding and spending time with his family! He's a life long Packer fan who loves going to games! Call Mike with any questions or anything he can help you with!

Nancy McCullough Berg

Job Titles:
  • Member of the Board
Nancy has been working at Summit with her husband, Mike, for over 14 years. She and Mike have been married for 32 years and have 3 children! Nancy enjoys the challenges that the ever changing internet brings and loves meeting the people that contact us from all over the country. "I love that I have made friends from all over. Once people experience our hands on way of doing business, they come back. I have sold many out of town/state people as repeat customers. I think that says a lot for the trust they have in us." In her spare time, she loves water-skiing, paddle boarding, boating, hiking, biking, traveling and working out but mostly spending time with her family.

Ryan Knueppel

Job Titles:
  • General Manager
Ryan has been in the automotive industry for over 14 years, and has developed a true passion for customer service. He was born and raised in the Fond du Lac area but also lived in Naples Florida from 2000 until 2010. While in Florida he mastered the art of true customer service while working for the Ritz Carlton Hotel Group. He is now married and has two beautiful daughters that he spends as much time with as possible. In his free time he loves to golf and fish every chance he gets.

Ryan Mikle

Job Titles:
  • Used Car Manager
Ryan has been in the automotive industry for 9 years. He was born and raised in the Fond du Lac area. Ryan has a background specializing in all types of used vehicles, with a true passion for trucks, imports, and specialty vehicles. He strives in taking great care of our customers and to provide the best car buying experience possible. In his free time he enjoys being on the water, hunting, golfing, and trying new things that challenge him!

Sam Eichner

Job Titles:
  • Parts Consultant
Sam was born and raised in Jackson, WI. He has been in the Automotive Industry since 2012. He went to Moraine Park where he studied Automotive Technology. In his free time he enjoys playing cribbage with his girlfriend Patty. He will never pass up a game of corn hole when there is an opportunity. He also bowls in a league in Oshkosh on Friday nights. Sam loves spending time with family, especially with nieces Olive and Margot, and nephew Arrow.

Tim Brenner - CFO

Job Titles:
  • Finance Director
Tim is the Finance Director here at Summit Chrysler Dodge Jeep Ram. He has 30 years of experience in Automotive Dealerships with 27 of those years as Business Manager. He grew up in St. Peter and now resides in the Fond du Lac area. When he is not at work, he enjoys spending time with his son Riley.

Tom McComb

Job Titles:
  • Product Specialist
Tom is a recent addition to our family at Summit Automotive. He was raised right, as a Green Bay Packers fan despite growing up in CA. His Dad is an Air Force Vet, serving for over 20 years. Upon retirement from the Armed Services, his family moved to Madison, WI where he went to high school. Tom attended UW-Stout for both his BA and MA. Tom loves being able to work, live and serve the Fond du Lac community. He also enjoys hunting, fishing, golf and finding amazing supper clubs across WI.

Tommy Vang

Job Titles:
  • Product Specialist
Tommy has 3+ years in auto industry and graduated locally from Fond du lac High School. His off time is spent with his 12 year old son Jhaedyn and family. Tommy is Bilingual and fluent in Hmong and English.