I saw some numbers a while back and it's very, very low. The real theft ends up being people stealing the mirrors since those go for some $$ on ebay and the like.

I think would-be car-jackers know stealing a Tesla is pointless. Sure, they could stick it into a shipping container.... but then what? All of the electronics are signed and can be traced, the car as gps and will phone home the moment it leaves the container.

Too much work for too little reward.