First, you need a car that will do 140+mph. Then you need the traffic out of the way. My best was 135mph in a rental. Can't do it in my car, but before I leave I want one run exceeding 150mph.
not really , lets say you`re topping out at 120 mph as my Fiat 1500 convertible did...driving towards Munich I got top a very nice down hill, I could "feel" it speed up ,even though the speedo was still pegged at 120
