Back when, exactly? Because if you're complaining about size, I remember when a '70s Dodge Dart passed for "compact car". (For reference, youngin's, you could put multiple bodies in the trunk of a Dodge Dart.) And a shadow of what? Gas-guzzling V8s that put out a whopping 250bhp? 350bhp if you were lucky? With drum brakes to haul yer ass down to zero? My 72 year old mother drives a '16 Corvette that puts out 450bhp and gets 25mpg. It'll stop so fast you can feel your retinas loosening. I'd have to take it to a track to get it out of shape, I dare not test its handling limits on a public road. All for $50K. (EDIT: oh, and aesthetics? I
loathed those swoopy, gaudy, plastic penismobiles. Until I saw the new ones and said, "I would now like to own a Corvette, for it is much hotness.") Other examples abound. If you're into cars, there is no better time than now.
No, I think it has more to do with the collective realization that maybe a car is less a ticket to freedom and more an albatross around the neck of its owner. Expensive, dirty, and in urban areas an increasingly annoying way to get around. I was thinking just yesterday, as the fuel light came on in our ICE car, "gawd, what a pain in the arse these things are. I'll be glad when all of the vehicles in our house are electric." And I'm old.
Or more simply, maybe we collectively figured out that automobiles make a poor substitute for a penis.