We had a local "Yellow Bike" program like that, small scale. If you found a Yellow Bike that was "unoccupied," you could use it. People took the donated bikes home and kept them.
They changed the program. For $25 you could have a Yellow Bike of your own, free maintenance. That ended, too, because the volunteers couldn't pay for the small shop they used. Had to admire their heart.
I got a great Motobecane Grand Touring bike from them, though. Still have it, but it has that French type threading in the BB, so maintenance will be problematic.