While Tesla's Model S might be physically the safest car on the road, once it's parked up by the curb, it's not very secure at all. That's according to a security researcher, who says the Model S is very vulnerable to some rudimentary hacking techniques, allowing a would-be thief to remotely locate your car, unlock its doors, and then steal all your stuff. Fortunately, the researcher hasn't yet found a way of starting a Model S without the key fob, but given how security always eventually falls to hackers, it's just a matter of time.