And are all speeding limits fair and reasonable? Not even close. Furthermore, what's reasonable for one driver is not reasonable for another driver. I know plenty of driver's who shouldn't be driving period. What about the elderly who can't see anything? I know they have to drive to take care of themselves and might not have any other choice, but they are also endangering the lives of everyone.
The capabilities of a driver is relative to the individual driver. Therefore I believe the penalties should be for accidents, not trivial traffic laws that have little to no relevance to driver safety. Sure there are some good traffic laws out there as well, but just as many crazy ones. If you can handle driving 80 miles an hour safely, then you shouldn't be penalized thousands of dollars because of it.
Now if you drink and drive? Or if you kill someone, then go nuts. But driving 10 to 20 miles an hour over a speed limit on an empty highway should not merit such a steep penalty. This is ridiculous.