The After-Skirmish Series

The world can't be saved; it has already ended. 

The "Skirmishes" have left the land in absolute ruin. The last few remains of civilization are Citadels; corrupt, oppressive, and dangerous for most who inhabit them. Outside, the "Big Waste" is a stretch of an endless damaged landscape that has been scorched, poisoned, and left to decay by the horrors of constant war. The threat of Citadel bounty hunters, mutated animals, ghoulish formerly-human mercenaries, and all-powerful gangs looms over everyone. 

Happiness is unlikely, conflict is frequent, and death is certain. 

When an accomplished destruction derby driver decides to take a seemingly simple delivery job outside the Citadel for a little adventure, he learns very quickly why the first day in the Big Waste can often become your last. 

Disclaimer: This book contains brutal violence, unconventional morals in a post-apocalyptic world, detailed mature activity, nonhuman females with poly and harem elements, and a little bit of dark humor thrown in for good measure.