Scavenged Earth

It's all about what you do with what you have left. 

On the eve of nuclear war, Merry asks her half-billionaire Uncle Angus to pick up her commie best friend, Letty, en route to a cave to wait out nuclear fallout. But by the time they join Merry's family, they share a shameful secret.

Post-apocalypse, the close-knit group hunkers down at the abandoned SpaceX compound in Boca Chica, Texas, survives by scavenging and finds solace by escaping to an imaginary intergalactic dance club. 

Stir-crazy years later, they risk a dangerous vacation on a mission to rescue a wall of hair, which they aim to launch into space.

This is the second book in the dystopian Scavenged Earth series.