I'm in Cambridge, MA, on business for 4 days. Instead of renting a car I rented a bike, which was my plan before I knew anything about the area. With MIT and Harvard in the near area there bike lanes and cyclists everywhere... I'm in HEAVEN! I feel fortunate to have experienced such a great place to bike and such cordial motorists. If you live in Cambridge, I hope you know you're in what must be USA's best cities to cycle.
My home Atlanta could learn a few things from this place.