[brightball]

50 hour stretches are also pretty rare. If you’re shipping that far by truck I’d imagine you are on a train.

[dsnuh]

I think 50 hours would get you across Interstate 40 nonstop. But you wouldn't need to have the trucks go all the way. Just have transfer stations every 500 miles or so where the truck transfers the trailer and recharges/refuels. Even if it was a manual process to transfer the trailer and refuel the truck, you would more than make up for stoppage time with human drivers.