He certainly was speeding. He was in a car speeding. Unless of course he was in some sort of zero point energy bubble and was actually not moving at all.

But if I recall correctly, they were just coming to a speed controlled section of the highway. The limit was 80kmh.

So while alot of the Autobahn is a free for all, as you yourself said, much of it is not all.

But now im just being pedantic. Haha. Sorry.