"Maybe the bigger dilemma is that, too much of the time, our cities aren’t going fast or slow. Chuck Marohn, executive director of the nonprofit Strong Towns, has argued that we continue to make the mistake of building 45 mile-per-hour cities — places where we travel (usually by car) at a speed that’s somewhere in the murky middle. This happens because we forget the difference between a street, where vibrant, valuable, low-speed development should flourish, and a road, which should quickly take us from one place to another. Instead, Marohn says, we’ve ended up with a bunch of “stroads” — four-lane arteries, lined with mini malls and parking lots, that are too fast to encourage good development, and too slow to efficiently move us in and out."
— In the future, urban bikers go faster than cars - Salon.com