This means that the chassis and tires of each vehicle that we drive will have the same proportions and characteristics as they would in real life. Thus, every design must have realistic characteristics and features.
Rigs of Rods is an amateur project where the intention isn't to create a game but to create a realistic driving simulator. Driving simulator for all sorts of vehicles That is the general premise of Rigs of Rods, that will allow us to drive trucks and cars, fly planes or sailboats with low-quality graphics but the most realistic physics.
Nevertheless, sometimes it would be rather interesting to test how things really work in real life. Video games usually adjust their difficulty so that they work out to be entertaining.