For electric-assist bikes, the GPS tracking could be worthwhile. For other bikes, the complexity of the system seems not worth it. It's probably more cost effective to just insure the bike and not have a small generator, battery, GPS, and wires all over.
For ultralight racing bikes, definitely not, but those are probably a minority even in cycling-friendly cities like Seattle.
Put the GPS tracker + battery in the headlight of a bike with hub dynamo... the tracker would work, you can activate it for just a few munutes a few times a day.
But if the police does not care, it is not useful.
For ultralight racing bikes, definitely not, but those are probably a minority even in cycling-friendly cities like Seattle.