mkirsch wrote:
The population of the United States was only 213 million in 1974. Every 16 year old did not get a brand new car for their birthday. One-car families were still very common.
Translation: Lots less traffic on the road.
Yes there were Interstates but not nearly as many, so definitely more surface road travel.
Translation: Slower speeds, less power needed to maintain them.
Further, folks were more tolerant of someone poking along pulling a heavy trailer. Now you'd be lucky to make it without some idiot plowing into your rear because they "didn't see it." If they don't plow into you, you get the lovely hand gestures of irate drivers, and a good possibility of finding one of those irate drivers waiting for you at the next rest stop, ready to give you a piece of their mind, feed you a knuckle sandwich, or give you lead poisoning.
Very good point and totally true.
However, to your point, a car with a trailer making it up the pass at 25mph in the '60s being acceptable, a horse and buggy going 4mph or a model T blocking traffic would not have been.
Fast forward 60 years and the old underpowered rig pulling a trailer up the pass, slower than most of the semis, is today's horse an buggy.
It's all relative.