America. I used to walk two miles to school when I was a kid. That school got torn down years ago, but was replaced with another on the same lot. It would be just as easy to walk today as it ever was; there hasn't been some fundamental change in how communities are laid out.

School buses still exist too. Kids in rural areas can stand at the end of their driveway and board a bus without parental supervision, provided their parents aren't totally paranoid.