Brilliant idea! Just give them one of these and a laptop and let them learn some coding on Codecademy while on the road: http://www.amazon.com/AutoExec-Wheelmate-Steering-Attachable...

Speaking as someone who is sometimes on that road in a vehicle that is much smaller than a truck, I would strongly prefer that they keep staring at that road, and everything else on it.

I'm in such a vehicle too, and I think you're crazy to want that. If they spend 6 hours unnecessarily staring at the road while autopilot is on, they're not going to be anywhere near peak driving condition when they do take over.

Heh, yeah they could definitely learn some other profession while monitoring the truck. But it would probably be against the rules or downright illegal...