Nah, it's just as vulnerable if not worse when people really start getting pissed. How many tires do you think an automated truck can loose at once? Will it even care that it's being shot up and pillaged. A man can get out and change a slashed tire or a cut trailer brake line, or even clear road hazards... A machine will just be stuck when a handful of patriots pour some sand on a steep grade. When shit really goes down, there won't be any power stations left and they'll probably be electric at this rate. Then there is network vulnerabilities and all that. Plus there won't be any rail lines to stock the regional distribution centers. Self driving tech isn't going to save them from shit, they'll be living off stock piles in gilded cages or in Monaco.