When I first visited the US I was pretty appalled. Silicon Valley towns are huge stretches of residential areas where you can't even get a coffee on foot, you might be ok by cycling if they're not too large. In inland non-ancient cities, even the city centre is built for cars --- you can go around and get things by foot in the centre, but the roads are still made for cars, so you're constantly crossing 4-lane roads and walking across huge parking lots.