I agree. If that design was made with modern materials, powertrain, and manufacturing methods it would probably be a lot lighter, and more fuel efficient. If made now it probably wouldn't be too bad. I especially like the front & rear blocked wheelwells. It almost looks like the car is floating.
Yea, the metal is probably 1/4 inch thick. The engine is probably a v12 or at the least a big ol monster streight 8 under that football field long hood. They made some very large motors back then.
Make the body out of carbon fiber and solar panels and shorten the hood a little, downsize the thing a little without trashing the looks and aerodynamics. Mod the cockpit to resemble those on a fighter plane for better aerodynamics. Then you could just fly it over any traffic jam and you'd never have to stop until you got where you were going.......haha