Well... it is: http://www.roadandtravel.com/safetyandsecurity/highwayfatalityrat...

dangoldin · on Sept 30, 2009

But that hasn't necessarily come from car safety although I'm sure that's a large contributor.

It can also be attributed to better education, more cracking down on drunk drivers, etc.

noodle · on Sept 30, 2009

I think it's unfair to compare cars from 50 years ago against cars today without comparing the behavior of the drivers, improvement of safety education, improved laws, better police enforcement, etc..

see what i did there? ;)