Go-Go Girls of the Apocalypse by Victor Gischler

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.

Hit and Run by Lawrence Block

Keller’s a hit man. For years now he’s had places to go and people to kill. But enough is enough. He’s got money in the bank and just one last job standing between him and retirement. In Des Moines, Keller stalks his designated target and waits for the client to give him the go-ahead. And one fine morning he’s picking out stamps for his collection at a shop in Urbandale when somebody guns down the charismatic governor of Ohio.

I’m not familiar with Gischler but he’s got a knack for titles. I’m a long-time fan of Lawrence Block. If you’ve never been on one of Keller’s hit jobs, you’re in for a treat.