Sludgment Day / John Kloepfer / 215 pages / December Challenge Apocalyptic Literature

This is the third book in the Zombie Chasers series.  We find Zack Clarke riding shotgun to Ozzie Briggs in the cockpit of the helicopter they had commandeered to escape the zombified White House with the antidote.  Zack's sister, Zoe, her BFF Madison Miller, his best buddy, Rice, and Dr. Scott, who had developed the antidote based on advice from kids, were in the back.  They're on their way to Phoenix, Arizona to unzombify Zack and Zoe's parents.  En route, They encounter Zombie pit bulls, zombie raccoons, and zombie Elvis impersonators, the world's largest catsup bottle in Collinsville, Illinois, a tornado, and the Mall of America.