I'd be curious how these autopilot systems react to a mechanical failure. Say a blown steer tire? Assuming the system maintains control of the truck, will it pull to the berm or just stop in a lane of traffic?

What if it loses compression braking going downhill? Like a broken driveshaft. Will the system fry the brakes trying to stop? Will it use a runaway ramp?

What if the truck breaks down in traffic? Will it allow another truck to pull it out of the way?