Rigs of Rods is an open-source vehicle simulator that allows users to drive, fly, and sail a variety of vehicles. It features a realistic soft-body physics engine that simulates the physical properties of vehicles, such as suspension, engine torque, and aerodynamics. The game also allows players to create their own vehicles and environments, as well as modify existing ones. The game also features a variety of vehicles, including cars, trucks, boats, and planes. Additionally, players can also race against each other in several different game modes.
Because it is a good truck driving simulator.