Far more difficult to get a driver's license in Germany. Far more restrictive regulations on cars and aftermarket parts (google TUV).
Quick anecdote: at the end of a week long trip in Germany, visiting a friend in the USMC, which included a few thousand uneventful KM on the Autobahn, including speeds up to 230 KM/HR (the limit on our rental car) we were driving back to Frankfurt to drop off the rental and catch our flight home.
We saw the first lousy driver of the entire trip.
Merged at about 90 KM/HR, moved smarly across several lanes of traffic to get into the left lane while still doing 100 KM/HR (tops) forcing the MB in front of us to brake HARD from the 180 KM/HR or so. We were hard on the brakes, too. Complete disregard for courtesy, or rules, and complete disregard for the speed of traffic in the left lane. They did it to get around a truck in the middle lane, instead of waiting (me first!) as they should have. The driver then moved back to the center lane and continued on at about 120 KM/HR.
As we then sped back up and passed this idiot, we saw him clearly: USAF uniform.
Yep, the one moron in Germany who was creating a hazard for others through a failure to follow the rules was...
An American.
Sigh...