> Americans make hourly investments in their daily commute, just to get started, and don't typically have the kind of street-life infrastructure of your average European industrial region.
Probably because in the US people drive to work, while in Europe they either cycle or catch a train? Still interesting that Americans have shorter commutes, but if what I say is true, then it's quite a difference to consider.
Just emphasizing those are round trip numbers. I started to comment on how unbelievably long those were for “averages” before realizing you meant the round trip :)