Comment by panick21_

And a lot of Americans sit in their cars in start stop traffic for hours every day. With road rage and stress from road rage being a huge issue. You only need to look across most of American popular culture to see how deeply ingrained this is.

I would also not say that 'there is no concept of personal space'. Even in rush hour most of the time its not that bad in place I have been. You are sitting next to people, and rarely standing next to people. But its usually not a big issue.

Its often more comfortable then flying in a plane.