I read all the studies on the economic impact of bike lanes. Here's what I learned.

Businesses hate bike lanes. Sure, they reduce pollution, slow the pace of climate change, cut traffic fatalities, and make cities healthier and more pleasant. But they also take away parking spaces, which makes it tougher for shoppers to load up their cars with piles of stuff. Freaked-out business owners have been fighting bike lanes coast to coast, in cities from San Diego to Cambridge, Massachusetts. They worry — not unreasonably — that anything that makes it harder for customers to get to their stops will eat into their already precarious margins.