Roversaurs complete their chores on the planet Mars. Soaring, testing, and exploring, all among the stars! The Diggersaurs are hard at work building a Martian base! Read along with the dino-vehicles and discover the excitement of outer space. Truck and dinosaur lovers will devour this new adventure and love reading along with the rip-roaring sound effects! Don't miss the other books in this dino-truck series: Diggersaurs, and Diggersaurs Explore!