[cdibona]

Crowbar. It's super high tech. Seriously though, I'd like to know too. everything I can think of is either expensive/time consuming (syncing generic new wireless keys, copying physical keys), potentially damaging to the car, or require the provisioning of something that you leave plugged into the obd-2 port. That latter one you could do with 15$ in parts and a cavalier disregard for the cars security, so that could be it?