[antongribok]

I've driven plenty in both the US and Germany and the road etiquette in Germany is light years ahead of the US.

If I choose to drive 120/130 on the autobahn I have a much higher chance of doing so continually than if I choose to drive 75 Mph on an Interstate highway in the US.

I'll give you my anecdotal evidence from last year's trip to Germany. I took a ~550 km trip, and while I don't have actual GPS data from my trip on hand, I do remember that I was able to drive roughly one third of the way in sections with no speed limit and no traffic/construction.

For 2/3 of the way my average speed (including traffic and construction) was 122, so that took 3 hours. For the rest (1/3) of the way I was able to travel with unlimited speed. Traveling 183 km at 183 km/h (average) vs. 122 km/h saved 30 minutes of my trip.