I've ridden 120+ many times on my Motorcycle on a straight paved roads in the country, where I have a good line of sight, but never for more than about 30 seconds... you really feel the tar strips, as the suspension doesn't react fast enough at that speed. I can't imagine riding at that speed for any period of time.
I had my X5 up to about 105 on a Texas Interstate once, but really didn't see the point, as in an enclosed vehicle it's not nearly as fun as simply taking a 25 mph curve at 30 mph, or just driving through mountain twisties at a moderate rate of speed.
In the 1990's I rode in a Mercedes on the Autobahn while on business at 140-150 MPH, but that seemed more tedious than exciting as the biggest thing was just overtaking slower vehicles on the road. I guess I just don't get much out of going fast on a straight road.