[Max Lobovsky]

Right, I agree with Billfred. It is unlikely that cars can come even close to being totally replaced in the US. You might argue that public transportation can solve the problems Billfred stated, but that is unlikely with the relatively low population density (compared to Europe, for example, which is supposed to be leading the world in public transportation but still has great amounts of cars). But most importantly, more so than any other country Americans value their independence. A car, though it might be wasteful for the majority of the time, lets a person really go anywhere, anytime.