What country do you live in? We don't all live in downtown SF. In fact, most of us don't. We live outside the city and drive 20 miles to get to work (you're nuts if you think most people are going to spend hours commuting 60 miles on a bicycle every day). And there are no bike Lanes, let alone paths And it snows.
>There's really no valid reason to use a car unless you're an invalid.
You're on another planet. It's interesting that you talk about finding practical soltutions to "real problems" yet seem to lack any notion of what the real problems are.