It is challenging and expensive to get a driver's license in Germany, and the repercussions for screwing up are high. Also driving isn't as necessary--the excellent public transit means there are alternate means of traveling, so not having one is less of a detriment. So while the Autobahn might be considered the Platonic ideal of high-speed driving, it isn't always feasible or likely and I don't think it should be considered as such. As much as I wish we could have that in the US!