This is no place for the weak. Only true truck drivers manage to overcome their limits in the most adverse conditions on roads that defy physics and their skills. Get your reward and upgrade your truck items like: - Engine (increases torque to overcome steep slopes); - Speed (improves engine power so you can reach your destination in less time); - Fifth Wheel (prevents the cart from letting go of the truck in obstacles); - Cargo Fixer (Holds the cargo more securely on the trailer); - Spring (make the truck more resistant to road bumps); - Suspension (improves impact absorption); - Tire (improves tire grip preventing skidding); - Brake (keep in mind you need this a lot)