Stop driving and take a bike. This simple iOS app I wrote will help you find nearby bikeshare bikes or docks.
Read more at stationtostationapp.com
Update Jan 2018:
Unfortunately, Station to Station is no longer in the app store. I made the regrettable choice to depend on a beta version of ReactiveCocoa, which stopped working on subsequent Swift versions, and I couldn’t afford the time required for a rewrite. Station to Station was my first published iOS app ever, so while this was the right move for me, it still breaks my heart.