(1.04 Megabyte AVI Video File)
... because no matter how fast you're going, there's always someone faster.
Our rental car was a nice Opel Vectra. It seemed very smooth and comfortable at any speed.
At the time, I had no idea how fast I was going, the speedometer was in KPH. I was spending some time at 140, a more significant amount of time at 160, and even an extended run at 200 through one particularly smooth and straight stretch.
When we got home, I looked it up, and those translate to 86mph, 99mph, and 124mph, respectively.
The above video was taken while we were doing over 160kph. That's 100 miles per hour, and we were constantly getting passed like we were standing still.
It always seemed to be Audi cars, too. Sometimes a Merc or a Bimmer, but mostly Audis. And surprisingly (considering we stayed near Stuttgart), I only remember seeing one Porsche the whole time we were there. Yes, it was passing me on the 'bahn like I was standing still, but I was just surprised at the scarcity of Porsches.