A free program for Android, by Mustard Games Studios.

Flying Monster Truck Driving: Robot Transform Game is an action-packed, physics-based, robot action game. The objective is to drive as far as possible while having the fewest collisions.

The driving controls are very simple. You can either use the steering wheel or the arrow keys to control the truck. If you are not sure about the next move, you can simply wait for your next chance to make a move.

The physics engine is very powerful. It can handle very intense situations, such as when you are driving through a solid object or when you are in a high-speed, low-altitude turn. The way that the physics engine is implemented is very unique. 

The graphics are realistic. The environment is very detailed. The vehicles are authentic. The sounds are good.