I wouldn't say it's more comfortable. The rule on the Autobahn is that you move right if someone is coming up behind you. If it's two lanes each way, you'll h

I wouldn't say it's more comfortable. The rule on the Autobahn is that you move right if someone is coming up behind you. If it's two lanes each way, you'll have trucks going 80kph in the right lane and BMWs going 220kph in the left. If you want to go 150, you will find yourself urgently merging a lot with 70 kph speed differentials. The amount of attention and skill this requires is far more than the Interstate demands.