Click on one of the people below to find out more information.

  • Joel Zerbel
    Chief Operating Officer
    (920) 885-3500

    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.  

    A strong belief if his is that you should give back to the communities they serve. Customer service and employee satisfaction are top priorities at Summit. 

  • Mike Berg
    (920) 885-3500

    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!

  • Michael Berg
    General Manager
    (920) 238-0325

    Michael has been with Summit Automotive for 10 years now. His #1 focus is to make sure the customer always leave satisfied and trusts that he will take excellent care of their friends and family as well. In his spare time he likes to be on the lake, hike, and hangout with his two pups. 

  • Jeff Murray
    General Sales Manager

    Jeff has been in the car industry for 19 years and the best thing about being in this business is meeting new people every day and hearing new life stories. He loves being able to help customers get into something that will help take them to work, or on a trip with their family, and so forth. 

    In his free time, he enjoys golfing, rock climbing, hiking, playing tennis, mountain biking, kayaking, and anything else outdoors. He has a drive for adventure. Jeff has a daughter that he loves teaching new activities to, like snorkeling, rock climbing, ice skating, or taking her to the trampoline park. He also has a German Shepherd named Nala who is the protector of the home but also a loving snuggle bug. 

  • Josh Boersma
    Used Car Manager
    (920) 885-3500

    Josh has been in the automotive industry since 2005. 

    During Josh's time off, he enjoys cooking and being with his family.

  • Danah Rosenmeier
    Business Manager
    (920) 885-3500

    Danah is the newest addition to the Finance Team at Summit Automotive in Beaver Dam.

    She has a bachelor's degree in Business Management, 21 years of customer service experience, and a passion for numbers and communication.

    She was raised in the very small town of Lowell, WI and currently resides in Waupun.

    When not in the office, she loves to golf, travel, and of course spend time with her husband, three dogs, three nephews, and close friends. 

  • Steve Bastian
    Service Manager
    (920) 885-3500

    Steve has been in the auto industry for roughly 8 years. He was born and raised in Waupun. In his free time he likes to be with his wife, daughter, bulldog Winston, and friends. Steve enjoys bowling, playing softball, taking walks, listening to music, and relaxing.

    His goal is to go above and beyond to help our customers.

  • Rob Anderson
    Parts Manager
    (920) 885-3500

    Rob is a U.S. Navy Veteran. He moved to Wisconsin from Arizona in 2016. 

    Rob grew up the automotive parts business and has 27 years of experience. He enjoys motorsports and motorcycles, and being in the outdoors with his family.

  • Katie Luttenberger
    Marketing Director
    (920) 579-6794

    Katie was born and raised in Fond du Lac, WI. She loves spending time with her two dogs, 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 pups 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!                


  • Jamie Hansen
    Commercial/Fleet Manager
    (920) 579-2921

    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.

  • Daniel DeVries
    Product Specialist
    (920) 885-3500

    Dan grew up in Randolph Wisconsin and attended high school at CWC in Waupun and went to college at UWSP in Stevens Point. Go Pointers!  Dan is a huge sports fan of all the Wisconsin teams including The Brewers, Packers, Badgers and Bucks.  

    When he isn't selling cars and trucks or watching sports he enjoys spending as much time possible hunting ducks, deer and turkeys along with fishing for any fish he can catch whether it's through the ice or with a rod and line.

  • Brian Lowe
    Product Specialist
    (920) 885-3500

    Brian is from the Pacific Northwest, which means he loves the mountains and the ocean! He has been in the automotive industry for over 20 years! He has also worked in all aspects from detail to finance to sales manager and sales, where he works currently. Brian's favorite part of the job is assisting customers in all their auto needs, from start to finish!

  • Tim Cwirla
    Product Specialist
    (920) 885-3500

    Timothy is part of our amazing product specialist team and helps customers find the right vehicle to fit their needs. Timothy has auto body shop certifications, so he understands the safety features of vehicles more than most. He also has been detailing cars since he was 16, so he understands what makes a car look good. Timothy only recently got into sales, because he wanted to continue to help customers with their vehicles. He enjoys Traveling, Theater, golfing, the great outdoors and trying new things.  Hasta la Pasta!

  • Dave Puerner
    Product Specialist
    (920) 885-3500

    Dave Puerner was born and raised in Milwaukee WI and attended John Marshall High School where he graduated in 1983. He has three grown children, Justin and twins Nicholas and Nicole. He currently resides in Lomira and has five Australian Shepherds. In his spare time he likes sports, fishing, bowling, and just having fun.

    Before joining the Auto Industry he was a machinist for 26 years. He likes the fact of meeting and working with new people and people he already knows. Dave loves the feeling of seeing happy folks taking delivery of a new or preowned vehicle that fits their wants, needs, and budget.

  • Zac Graston
    Product Specialist
    (920) 885-3500

    Zac was born in California and was a former Sergeant of the United States Marine Corp. He enjoys boxing, personal training, and being social. He has a daughter, Fia, who is almost one and loves to spend time with her. Zac loves to find the positives in life and enjoys having fun! His motto is "having a good time, for a long time." 

    Zac is fluent in Spanish!

  • Brennon Moul
    Product Specialist
    (920) 885-3500

    Brennon was born in Burnett, WI, but grew up in Waupun, WI. In his free time you can find him either spending time with his family or outdoors hiking, kayaking, camping, or fishing. He is a bit of a country boy with a passion to travel and explore. He also enjoys sports and tries to attend as many Bucks, Badgers, Brewers, and Packers games as he can get to. 

    He strongly believes that you treat your family as your friends and your friends like family. 

  • Rachel Smith
    Service Advisor
    (920) 885-3500

    Rachel has been a service advisor for the past four years, and prides herself on providing amazing customer service.  

    When not working Rachel enjoys spending time with her daughter Avah, and mastiff named Lambo.

  • Lexi Martin
    Service Advisor
    (920) 885-3500

    Lexi was born and raised in Fond du Lac WI. She now lives in Waupun with her Husband and her daughter. Lexi just started in the Automotive business, her goal is to provide excellent customer service to every customer. In her free time she enjoys helping out at local animal shelters, spending time with family including her English Mastiff, Huxley.

  • Dylan Lindegarde
    Parts Advisor
    (920) 885-3500

    Dylan is new to the Automotive Business. He is learning the ropes and enjoys working with our customer's and computers.  

    In his free time he entertains his little brothers and looks forward to competing with his opponents on XBox.

  • Kayla Boersma
    Business Development Director
    (920) 885-3500

    Kayla has been involved in the auto industry for the past 8 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.