Corvette Hardtop Motorama Showcar, 1954
The Corvette Convertible Coupe was the closest in styling to the production model. It was painted in a muted yellow hue and it’s main distinctive was a fiberglass removable hardtop that gave the sports car new ”all-weather utility” as touted in the Motorama brochure. This feature would appear on production models as an aftermarket accessories beginning in 1955 and would officially become an option for the 1956 model year.
The hardtop feature would not become available until 1956. It took General Motors and Chevrolet three years to figure out that the consumer wanted roll up windows, outside door handles and door locks.
Like the 1954 Chevy Corvette Corvair and 1954 Chevy Corvette Nomad only the Chevrolet Corvette Hardtop Motorama Experimental Show Cars were made. How many? No one really knows.
Chevrolet Corvette Convertible Coupe, 1954 - Rendering
Three Corvette-based show cars were among the attractions of the 1954 GM
Motorama. From background to foreground are the Nomad, Corvair, and the
prototype hardtop car. The latter featured a detachable hardtop and
roll-up windows; both features would be adopted for the 1956 Corvette.
The white Corvette is a production model.
Source: shorey.net