Agree with most statements so far (and particularly GanG's comments above) as this is a complicated issue - and there is no easy solution.
In the 80's we also used to lie the seats down in the old Mitsubishi L300 so my brother, sister and I could go to sleep in the back when coming home late.
Fast forward to 2014 - driving car with Child seats for kids with 3 point harness - a gazillion airbags, ESC, Traction Control, Crumple Zones (L300 crumple zone was the bumper bar only), speeding paranoia... making it all safer to drive.
Car manufacturers get very little credit for the drop in fatalities in Australia. That's wrong. I'd rather be in a crash in my 2014 car than my first car being a 1974 Honda....
Maybe a side note - But - They say inattentive drivers. Out of curiosity I counted all the road signs including ads, speed signs painted on the road, side of the road, over the road, instructional signs - you get the gist - from Toowoomba to Brisbane. I got bored counting after I was over 500 and this was not including checking my speed every xxx seconds to make sure I wasn't speeding. How Ironic !! Too busy being "safe" by being a good lad checking my speed and all the signs rather than concentrating on the road and other drivers.
Funny how you get a different point of view when you speak to someone from the UK. 70 Mile/hr limit on the Freeway limit. My mate tells me that you can pass a police car at 80-90 MPH and they don't care - in his words "because he is driving safely". I was able to test this theory from Sheffield to London and he was right. However, do this whilst tailgating someone or change lanes and cut someone off and they will pull you over and crush you like a bug as this is dangerous driving... I believe it is Mandatory for trucks to stay in the left hand lane and are only aloud to overtake then must get back in the left lane asap or they will be booked as they don't want to slow the traffic down when trucks go uphill even just a little bit.
Seems like we've taken the whole speeding thing in isolation and not as it should be - as only part of the problem.
Ps - according to my fuel consumption figures I do pretty good so obviously just drive like a Granny....