Knight Rider was a boon for General Motors Pontiac and also Cadillac. Pontiac supplied the Firebird Trans Am for the show, which in 1982 was a newly-redesigned model. Knight Rider promoted the Pontiac label for General Motors. Cadillac also benefited because Michael Knight's boss Devon sometimes drove a Cadillac. He would drive a Cadillac Seville, Cadillac Eldorado, or a stretch Cadillac DeVille limousine. In addition, General Motors supplied cars for the show's production.
On July 8, 2008, GPS manufacturer Mio Technology announced the release of a Knight Rider-themed GPS unit for a price of $270. The unit has the original Knight Rider logo printed above the display and features the voice of William Daniels.
