Wow, a nanny-stater with a sports car. Perhaps you are unaware that in most states it is the driver, not the state, that determines the speed limit. I.e., speed limits are required by law to be set within a certain amount of mph of a certain percentile of the plotted speed absent a compelling reason to the contrary. For example, in California the speed limit on a general access road is to be within five mph of the 85th percentile of the plotted speeds of the traffic.

This is for a reason. Slower or faster, the most dangerous persons on the road are those that are not travelling with the flow of traffic. I'll bet that there are plenty of people who have been rear ended or rear ended others when the accumulated snowball effect of someone driving slower than traffic causes the traffic a mile behind to approach "zero" and hundreds of cars are thrown into a panic stop. This, however, is your world when you don't drive 72 with other traffic but 65 as posted on a busy freeway.

I also don't understand your purported corrollary between you getting hit by a speeding uninsured motorist and speeding in general. It is more of a non-sequiter. If I am "speeding" with traffic, there is simply no method through which I can be the effective cause of an accident due to that speeding.