Earlier quoted context omitted.
most Americans don't fly I'm not sure that's actually true. According to the Bureau of Transportation Statistics, there were 646 million enplaned passengers in 2013. ("Enplaned passengers" means passengers boarding originating flights, i.e., either nonstops to the destination or the first leg of an itinerary with at least one connection.) That's more than twice the population of the US, and about 2.7 times the popula…
Speed enforcement is a political issue these days, not a cost issue, it is quite cheap to put speed cameras everywhere and many countries do. We could eliminate speeding if we wanted to, Americans just don't want to. So what if a few more people die every year...freedom!
The problem I have with speed enforcement as such is that speeding, in and of itself, doesn't harm anyone. Note that in my suggestions above I didn't say anything about speeding by itself; I said if you are involved in an accident and your speeding is a contributing factor, that should increase the negative consequences you suffer. That would give people an incentive to properly consider the risks of speeding; and the person who is actually driving the vehicle, and sees the road conditions and other variables as they are, is in a much better position to judge what is a safe speed than a bureaucrat writing speeding laws.