Fastest for me 140 in a BMW 740i, my 200tq 20v is faster, but haven't had it over 120. Fastest thing I have driven is my boss' 1997 Kawasaki ZX11 top speed of 169, I only went 120 on it though. My 1985 Honda VF700 interceptor will only do 125. That said thinking about a flat or emergency stop on a motorcycle is even scarier than it is in a car.