...the last time I drove 900 miles in one day was 35 years ago with three other teenagers who rotated driving during spring break. Probably not the demographic to build an automotive infrastructure around.
Most people have one or two of those "youthful marathon drives".
Part of the problem is that everyone still thinks they can do that.
Hospitals have thousand of injuries every year from when sedentary people that are too old attempt sports or activities of their youth.