That actually sounds like a really interesting concept, one of those ideas that seems obvious only after someone suggests it. What company is this?
Right now, in the Seattle area, we are basically seeing a new littering epidemic in the form of sharable bicycles being left to rust away, unused, at random places. If the bike could cruise to its next user autonomously, that would be really be a game-changer. "Bikes on demand" would turn bikesharing from (IMHO) a stupid idea into something that just might work.
Plus, the engineering challenges involved in automating a riderless bicycle sound fun.