Real quick, take a look outside your window. Do you see lots of roads? How many of them have dedicated, protected bus lanes? What about bike lanes? Unless you live in a few select cities — like Bogota, Colombia; Cleveland, Ohio; or Guangzhou, China — you're probably just looking at a few boring, old, single-purpose roads. That may not seem like a big deal right now, but check out this talk, and then tell me you don't feel even a little uncomfortable about the way cars — and the money it takes to operate them — dominate most American cities. We can totally do better.