There have been several Nomad concept cars. The first was of course Harley Earl's Corvette-based 1954 concept introduced at the GM Motorama that predated the classic "tri-year" production models. One from 1999 was based on the F-body (Camaro) and was V8 powered. Another concept presented in 2004 was based on the GM Kappa platform, and highly resembled the original 1954 Corvette-based Nomad showcar. It had a 107 inch wheelbase and was 155.5 inches long.