there is another aspect to the proliferation of bad drivers.
When I was a kid a 30mph head on collision could easily be fatal - no seat belts, steel dashboard, Peter Pan through the windshield....
Today people are surviving 60mph accidents, insurance buys them a new car, and they are back on the road in days, instead of lying under six feet of dirt.
I know this sounds cold hearted, but the really bad drivers are not getting eliminated by their own bad driving as much as they use to. How many times have you seen a drunk driver gets arrested after killing someone, and is charged with his 6th, 7th or 10th DWI?
Dont get me wrong, its great that cars are safer for people that are in accidents, esp since most people were not responsible for the accident they were involved in. But it does have a downside.