Interstate driving is not easy. It's just slightly easier than intense urban traffic, and that's for normal passengers vehicles. A 70-ft 40-ton semi truck is a

Interstate driving is not easy. It's just slightly easier than intense urban traffic, and that's for normal passengers vehicles. A 70-ft 40-ton semi truck is an entirely different challenge. There's a magnitude more things to worry about from wind speed to weight transfer and it's nowhere near as simple as plugging in the current self-driving AIs on "highway" mode.