I'd love to see a business where you could rent some of those older cars, even if it was on a closed setup, just to drive them again.
It could be like an amusement park, complete with a "strip" that included drive-in restaurants, a drive-in theater, and a "car show" to show them all off.
There's something about the rumble of an Olds Gold Rocket engine, the feel of a floor shifter, and the moan of a 4 barrel carburetor.