シボレー・コルヴェア
The X-platform is a rear-wheel drive architecture that was introduced by Chevrolet for 1962 as a more conventional alternative to both the Y-platform compacts of Buick, Pontiac, and Oldsmobile, and the Z-platform Chevrolet Corvair, with Chevrolet debuting the architecture for 1962 with the Chevy II compact sedan.