Rob,
Are you suggesting that the best photography might take place in the back seat of a '57 Chevy?
Let's put it this way: if you have to change lenses out on location, then the best place would be in the back of any
closed car so you could preclude the ingress of dust, dust which may take photography to unexpected highs or lows, but being out of photographer control, must remain a little bit doubtful as a technique.
There have been some good snaps made
from the back seats of cars, young couples on double dates, etc. (a strange, transatlantic custom (rite of passage?) almost unheard of in 50s Scotland, where attention was best focussed on one damsel at a time. But then, the majority of Scottish teens of that era had absolutely no chance of getting into the back seat of any car, never mind drive one.
It was a part of the American Dream for us foreign kids; not double-dates, but having a car.
Rob