When I was stationed in Germany I had a 5 series BMW and the roads were not so crowded. I could drive from Hanau to Berchtesgaden (335 miles) in four hours with a bathroom/fuel break.
I've been 145 miles
per hour on a BMW motorcycle on the A8 south of Munich. It was a Sunday morning with not much traffic.
It is a little harder to do stuff like that now because the Autobahn is more crowded and you are likely to run into a "stau" (traffic jam).
I miss Germany.