You can plaster San Francisco with all kinds of (fitting) labels: It's a Culinary Town. It's a Gay Town. It's a Literary Town. And it's definitely a Bike Town. So Bike to Work Day is always a big deal, but this year is special. Cyclists finally saw long-awaited improvements to their commutes: Much-needed new bike lanes have been laid down. A whole swath of Market Street is devoted to cycle traffic on weekday mornings. And the city approved plans to improve the traffic flow around the cheap gas station on Fell Street that has motorists clogging up the heavily used bike lane.