I can so see that personally -- I live in what would be an urban area in the US, but I can park nearby and I have parking at work, so I mostly drive. When I was a student 10km on a bike was not much. Now?

My parents live outside of town, but they get exercise because they have to walk their dog. Otherwise they probably wouldn't get any either.

It is pretty scary, and while I know I could exercise I don't.