
Two years ago, the Stillwater Motor Company joined the Cornerstone Auto Group combining two family legacies, more vehicles, and more choices for the greater Stillwater community.
WE ARE BETTER TOGETHER.

Cornerstone Automotive has been thrilled to welcome Stillwater Motors to our growing group of dealerships! Operating a successful dealership for over a century is a remarkable accomplishment—an amazing achievement through generations of Raduenz family stewardship. It was immediately clear that they valued people above all, and we felt that we were perfectly positioned to honor the values and history of Stillwater Motors and to take the dealership forward with continued success.
We also work to provide solid local job opportunities at all levels where employees have the opportunity to grow in their department and throughout the Cornerstone organization. To that end, over 90% of Stillwater Motors employees decided to stay, which means that we continue to employ nearly 100 local residents that have worked with Stillwater motors over the years. As we grow, we look to add to that number and create more jobs right here in Stillwater. Our employees are the primary way that customers experience the values that define Cornerstone – the values that first attracted D.J. Raduenz and Stillwater Motors to Cornerstone Auto. These are the things that we consider when everyday decisions are made.

May 14, 2024 (Revised May 1st, 2026)
Cornerstone Automotive has been thrilled to welcome Stillwater Motors to our growing group of dealerships! Operating a successful dealership for over a century is a remarkable accomplishment—an amazing achievement through generations of Raduenz family stewardship. It was immediately clear that they valued people above all, and we felt that we were perfectly positioned to honor the values and history of Stillwater Motors and to take the dealership forward with continued success.
Here is a little more about our organization:
Similar to Stillwater Motors, we are proud of the job we do taking care of our employees, our customers, giving back to the community, and operating with a strong set of core values that guide our decisions. We have been excited to see what we’ve done together these past 2 years, and we look forward to many more years in the Stillwater community.
Sincerely,

Rob Powell
President & CEO
Cornerstone Auto Group
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