From 60 on the z WILL not smoke you. You will keep right on them. The crossfire was made for the autobahn, as 350z has great torque of the line. The Z is a nice car and was my first choice but due to forces out side of my control I now drive a crossfire. Now take your buddy on the highway and ask him to show you his car is faster. That will shut him up.
And any german car WILL do that better than any japanese car.