If you're willing to pay the freight, and haul out the modelling skills, Revell did a series of such vehicles (IIRC, they were in 1/25 scale) back in the late 50's. They're definitely technology of that era and are a challenge to build. I remember building a '55 or '56 Buick convertible and an Olds sports coupe. There was also a '55 Ford 'vert and a '56 Mercury hardtop. Revell occasionally reissues the Ford, but I can't recall the others being re-popped. You can cast about in the various trader's forums, or haunt evil-bay. Just be ready to pay biggie baggage for the rare Buick.
Phil "Silverback" Schenfeld