Ive done low 37 second laps on route x. So here is some math if we rounded that to 37 seconds
18.8 miles = 99,264ft
99,264 / 37sec= 2682.8108 ft per second
2682.8108fps x 60 = 160968.65
160968.65 x 60= 9658119
9658119 / 5280(ft in a mile)
1829.1862 mph (average) I do well over 2000mph in the straights