I left Germany 7 months ago.
Here's a hint.
On 3 lane autobahn roads you can usually get to 140+mph without worrying about a trucker cutting you off. But be very alert.
On 2 lane autobahn roads I recommended no faster than 120mph, otherwise you'll probably cook your brakes as the truckers, especially eastern-block, love cutting right in front of you to pass up the "slower" truckers.
Be smart, stay alive.
I so miss the autobahn. With gas prices as high as they are it'll be tough, but try a Cannonball Run from K-towne to the Czech border. If you get anything under 3 hours, you're the $hit. I'm pretty sure the Germans have a site (in German) that posts times, but I couldn't find it. Stelina? Maybe you know.