On the Superbird, I don’t think you can fully appreciate how impractical this vehicle is until you’ve seen one in person. I distinctly remember seeing one for sale as NEW on the lot of a Dodge dealership in Chicago as late as sometime in 1972. It was definitely not for everybody. In fact, it was basically only for NASCAR drivers.
I’ve got some idea. I owned two 68 Chargers at one time. About a foot shorter but just as fat. Cornered like an asteroid, in other words they required a large amount of gravitational pull and several thousand miles.