Elon Musk showed of Tesla's new Cybercab on a closed lot at Warner Bros Studios.TeslaTesla faces several regulatory hurdles before launching a robotaxi service.Insurance is already a complex subject for ride-hailing fleets and Tesla vehicles.High insurance costs could wipe out earnings for Cybercab owners.There are plenty of hurdles for Tesla's promised Robotaxi fleet to clear before launching, but one overlooked barrier may be the complexity of insuring a fleet of self-driving Teslas.Insurance for ride-hailing vehicles is already a complex subject.