Seriously? Most late-20th century American subdivisions are built on the scale of a section, which is a mile on each side. Each section typically has a strip-mall type car-centered shopping area with a grocery store at one corner. Due to the fractal layout of the dead-end streets and lack of walking facilities it is generally at least a mile from any of the houses to any of the grocers. And that's for th people who are willing to walk down the side of a giant street-cross-freeway without sidewalks.