SFBC Gas Free Fridays

"The SFBC wants to help more people substitute just one short car trip
with a bicycle trip just one day a week. So, encourage a friend or
coworker to pedal with you to an SFBC Energizer Station on Gas-Free
Fridays and fuel up on coffee and snacks. In San Francisco, half of all
driving trips are under two miles in length, a distance easily traveled
by bicycle."