I haven't read Go-Go Girls of the Apocalypse by Victor Gischler, but this description, sent to me by the publisher, makes it sound good. If you've read it, please post your review in the comments.
Mortimer Tate was an insurance salesman on the verge of a nasty divorce when he holed up in a mountain cave in Tennessee and rode out the end of the world. Go-Go Girls of the Apocalypse begins nine years later, when he emerges into a bizarre landscape filled with hollow reminders of an America that no longer exists. Since "The Fall," highways are lined with abandoned automobiles, for which there is no fuel. Houses stand empty and what little civilization remains revolves around a string of strip clubs called Joey Armageddon's Sassy-a-Go-Go, where the beer is cold, the lap dancers are hot, the bouncers are armed with M-16s–and electricity is generated by indentured servants pedaling stationary bicycles. Accompanied by his cowboy sidekick Buffalo Bill and two gorgeous and lethal women named Sheila and Tyler, Mortimer journeys to the Lost City of Atlanta–and an explosive final showdown that just might determine the fate of humanity.