Also, very impressive driving.
The unlimited Record for the road North is 151 mph average (over 31 mph average faster than the video) set by Ron Adee (multiple time winner of the one lap of america) in a 1,200 HP twin turbo LS1 tube frame/carbon fiber Viper that weighed only 2,200lbs and had 2,000lbs of downforce @ 200 mph. Where we were limited to 145 max on the long straight, Ron was doing 220 (his car did over 220 in the standing mile).
Corners I was taking at 95 mph, Ron was taking over 140 mph and the slowest corner of the course, "the Y", Ron got it down to 120 mph (my GPS said about 65 at the apex). Years before he destroyed the record (also set by him), Ron was averaging 158 mph for the course at "the Y" but his Viper caught fire and he DNF'd. He upped the record every year in slower cars (NASCAR road course cars), then brought the Viper back.
Some people can take driving to the next level.
Ron's Viper at the Car & Driver 1 Lap:
Flame paint job represents it catching fire on his north run on the SORC at Arnold.