[bigiain]

There's another important task they do though - they collect them up from random locations, charge them, and then drop them off at pre determined locations, "nests".

I reckon the bicycle ride rental (no it's not "sharing"!) companies would be less hated here if they had a crew of teenagers making good pocket money returning all the out-of-the-way (mostly at-the-bottom-of-hills) bikes to locations where people expected/wanted to rent them...