It wasn't 90+, it was 100+. There really is a huge difference. I drive 80 regularly on the highway (traffic permitting) because everyone else does. 80 is a comfortable speed (for my car). I occasionally find myself pushing 90, and I slow down, but even 90 is still comfortable. I have, in my youth, driven 100-105 (on very few occasions) and it is a scary speed. It is out of control.
Over 80 is going to be a major offense in Fairfax County whether you feel like you can control it or not. If you do 90 you're losing your license for six months and going to jail. And on a straight stretch I completely disagree about 100-115 being 'out of control.' It all depends on the car, its alignment, aerodynamics, tire width, tread wear, etc. If the vehicle is designed to do it, it's pretty easy. If it's not, you usually start to notice right around 70.
Regardless of that, jail for speeding is a really rare thing in this country and it's pretty well agreed across the board that VA takes it way, way more seriously than most places. Note the following list of what counts as Class 1 Misdemeanors: assault and battery, petty larceny, stalking, driving under the influence, bad checks, domestic assault, aggressive driving, driving with a suspended license, reckless driving.
With Reckless defined as 20 over the limit or 80 MPH or higher, regardless of posted limit (ie those 70MPH stretches of 66 out in the western part of the state). 10 MPH over a posted limit is equal to beating the hell out of your wife, driving drunk, and stalking. You're facing up to $2500 fine, a year in jail, and it's not coming off your record. That's just so overkill IMO.
