Light weight mountain bikes will prove highly desirable. Can be carried across the worst debris, ridden on remains of roadways, taken cross country as terrain allows.
Actually. An old buddy of mine who has two kids that work in Portland has bought two dirt bikes for them.
Problem is, they are beating the hell out of them when he told them that they better take care of them for when that happens.
Gave them two man tents and canteens and the whole works.
He is one of those fringe preppers if you know what I mean.
He spent two tours in Iraq and actually had something to do with the Kurds there. What, I dont know, he wont say.