I grew up in wild wild wild Montana, with no speed limits. And then I got a street bike and raced it for a while when I was living in the Bay Area. Bottom line is, if you drive fast enough it takes all your attention. If the speed limit is too low, your attention starts to wander.
I have gotten in more trouble on stupidly slow roads than any time I was tooting right along.
Nonetheless, I have never, ever gotten a speeding ticket or been in a car wreck (bikes don't count). I have been pulled over and weaseled out of every one. Basically, the cop asks me, I say Yep, I know exactly how fast I was going, and ask him or her what the radar or laser says. And it usually goes well from there, and even if it doesn't, the worst has been a non-points equipment ding.


Up hills slow,
Down hills fast
Tonnage first and
Safety last.