[wyclif]

What driving culture are you referring to? The wealthy everywhere have a preference for sports cars. That alone doesn't constitute "driving culture", but a lot of what you're talking about is just compression. The US has much more wide open space than Germany does.

[jarek]

A much more stringent and in consequence structured driving environment. As others have noted, obtaining a license is more difficult. Uncooperative driving behaviour is heavily frowned upon and prohibitions actually enforced: driving in left lane, but also attempts to bully others out of the left lane and overtaking on the right.

As for compression, compare driving in NYC to driving in Berlin.

This isn't to mean that North Americans wouldn't be able to reach this standard if they decided to, but it would take decades.

[zizee]

From discussions with my Dutch friends, I know that it is ridiculously easy and inexpensive to get your driving licence here in Australia when compared to the Netherlands.

I imagine that Germany has very similar standards as The Netherlands, and I could imagine that many US states take a more relaxed approach.

Perhaps this is the "driving culture" to which the parent is describing?

[jasamer]

I guess he's referring to the fact that there are no actual speed limits on "Autobahnen" in Germany, there's a recommendation of ~80mph (130km/h), but itn't a rarity to see people going over 120mph... To sum up: people drive faster here. And from what I've heard, it's way harder to get a driving license in Germany (and Europe in general) than in the US.