You wouldn't have to wreck it.
Just box it in to stop the truck, loot it, and drive away.

YouTube is full of videos of truckers falling asleep, loosing control, wrecking, etc.

Nothing is foolproof but i think that over time driverless technology can become an asset but not before a lot of problems rear their ugly head.

Think about how many people died from poor designs over the first 100 years of cars.
There are thousands of little things designed into cars because people were injured or killed.
Safety glass, brakes on all 4 wheels, crumple zones on hoods, double latch doors and hoods, etc.

Driverless cars are going to kill a few people to find mistakes in the design. Just like people driven cars have done.

Like the airplane example above I prefer a trained person behind the wheel.
Definitely for now but the day of the driverless will be coming soon.

I think Lexus already released a steer by wire car or at least are sampling the waters.
Computers already control brakes, throttle and gears. Complete control of the steering is next.