Henry Billion first opened Billion Motors in 1935 as a single, new car franchise in Sioux Falls, South Dakota.Today, Billion has 16 new car franchises and locations in South Dakota, Minnesota and Iowa. These locations include Sioux Falls, Worthing and Rapid City, South Dakota, Sioux City, Iowa City and Clinton, Iowa as well as Worthington, Minnesota. Billion Automotive offers one of the most complete service facilities around, with multiple service departments, a full-service collision center and the largest parts department in the state of South Dakota. Billion Automotive is a family-owned business with over 1,200 employees. Owner Dave Billion still remains active in the business today. We're not only passionate about the cars we sell, but taking care of the customers who buy them.