 Additionally, the automobile has all the latest safety and modern engineering features available.Because Zimmers are built atop existing chassis, the company can use the legal certification of the Town Car and Mustang, obviating the need for separate crash and emissions certification by Zimmer.Art Zimmer established the company's manufacturing facilities in Cambridge, Maryland, and in December 1998 the first Zimmer Golden Spirit produced by the newly formed Zimmer Motorcars rolled out of the factory.