Oh, taking a car to get to Costco is awesome. When I lived on my own and shopped via walking I'd still occasionally borrow a friends time to do a big run with them to pick up canned goods, flour, etc... the stuff that's heavy and that you buy in bulk.

But in America, if you want half a pound of pastrami you're probably going to have to get in a car to get it unless you live in one of the few areas that still follows that sort of dense city planning.