Survival from the Center of the Earth: Doomsday Chariot Unlimited Upgrades

The whole world travels to the inner earth world, where death and life coexist. Natural disasters, man-made disasters, earthquakes, and giant beasts, everything threatens the lives of survivors! The Doomsday Chariot is bound to the game at the beginning, and Yan Hao activates the system. As long as he gets chariot points, he can upgrade the Doomsday Chariot! The driver's seat is too hard, so I upgraded it to a massage chair! There are too many monsters outside, so just equip the tank with a magnetic storm weapon! Will the next wave of natural disasters be floods? Directly upgrade the tires into propellers! People are in the center of the earth, racing cars to survive, the fun is exciting!