People are so irrational that even if it makes perfect logical sense to ride a bike instead of driving a car, they won't do it. Here's the answer though: the "fixie" craze. There's no logical reason for so many people to be riding brakeless fixed gear bikes but apparently it's "cool". I still don't understand how the hipsters got so into fixed gear bikes, after all, most of them are weak, scrawny, smokers that drink too much cheap beer. You'd think they would pass out after a block or two. Or they'd find that cycling in tight pants with a heavy bag over one shoulder and a U-lock in the back pocket jabbing them in the rear sucks. But they never figure that out. So all you need to do is convince people that riding a bike for transportation is the cool thing to do. You can build infrastructure till the cows come home on two wheels and still people will get in their cars and circle around looking for parking.