I've seen 150 a couple of times.
Once when hanging door to door with a new 370Z
and the other time was when a guy in an 04 Mustang GT, in front of me holding up the fast lane on the highway, waved "bye bye" to me before flooring his car. I quickly caught and passed him, then left him.
Normally, I'm cruising between 80-90 during my commute. (I leave my house around 4:30am, so my 57 mile mostly highway commute has sparse traffic)
I would easily feel comfortable setting the cruise at 110mph; but the law and the law of physics don't agree with those speeds on a regular basis.
Although this doesn't excuse my occasional sprint to triple digits, I have taught high speed driving for two Florida driving schools (Trackspeed International, which has been closed for years, and Chin Motorsports which is still in business) I've held a SCCA Road Race license for years and raced in class ITA for years, up until 2002. Again, this experience doesn't give me a license to speed on public roads, but I think I'm probably more competent behind the
wheel at these speeds than your average Joe.
Here's some vids for you:
This is when my 1992 Mazda Protege LX was still my daily driver. Track day at Sebring. I'm trying to chase down this 400hp Mustang. I can't hang on the straight aways, but I catch him because of handling and braking
[ame="http://www.youtube.com/watch?v=IVwKlHhrsuQ"]http://www.youtube.com/watch?v=IVwKlHhrsuQ[/ame]
This is the Same Mazda a couple years later, in a 1.5 hour Endurance race at Daytona. Just didn't have enough hp to pass that darn 91 CRX Si. But I give him a good bump coming out of the International Horseshoe.
[ame="http://www.youtube.com/watch?v=hd432fxLPz8"]http://www.youtube.com/watch?v=hd432fxLPz8[/ame]
This is a quick 60mph to 140mph run in my old 2002 VW GTI 337. This car was my daily driver and it consistently trapped 109 mph in the 1/4 mile.
[ame="http://www.youtube.com/watch?v=sr7NKkzKynA"]http://www.youtube.com/watch?v=sr7NKkzKynA[/ame]