In my heady days of V8 ownership ('99 WS6), I got it nearly up to 160 (my 155 MPH speedometer was maxed out) on an eight-lane freeway at 4:00 AM. Honestly, I do not see the big thrill in going that fast besides being able just to say that you have done it. 160 feels basically the same as 120, which feels the same as 80. Once you pass a certain point, it just doesn't feel that fast anymore. But, I do not think that 160 is unthinkable on a public thoroughfare. Just do it at a time when you can only kill yourself.