If you own a Tesla and plan on driving it reasonable distances, then you probably know exactly where your nearest superchargers are. After all, these devices charge up your car in less than an hour. But if you look at a map of an urban area -- let's say, Philadelphia, which is about 20 minutes from where I live -- you'll notice something frustrating. The city, along with many other urban areas, is somewhat of a Supercharging desert. Tesla acknowledges that this is a problem and is expanding their Supercharging network into urban areas, starting with Chicago and Boston.