Not sure about a self driving bike.

But I've long thought that one could "trap" thieves by setting up an unlocked nice bike with surveillance, and some kind of a tracker in the main tubes. Let the thief take it and bring it home to their stash where you could follow them home and snag the whole stash for a bust.

The technology is pretty much here. Add video, continuous GPS tracking, tracking and notification when the bike moves. Ultra High resolution.