My time is worth more to me than the ammount of extra gas cost. I try not to go more than 5 mph over the speed limit because I do not want a ticket. However if the speed limit was 100 mph I would drive it.
There may be less accidents if the speed limit was around 100 mph or more. People would have to pay attention to what was going on and not have time to read books and put on makeup while driving.
Saw a TV show about the Autobond (however you spell it) and then seem to monitor most of it by remote TV. If you are doing something wrong, they just send you a ticket in the mail.