I have the problem also without masses & friction setting.
You will, they're both zero by default.
All of the Car Demos have cylinders, that's why I asked which one you were referring to. Imagine that you have a cylinder made of a hard property (like glass or metal), now imagine your plane as an infinitely flat surface, also made of a hard property. If this cylinder was rolled upon this surface, would it come to a stop in real life? Probably but not for a long while. Now imagine the cylinder is made from a softer rubber, what would happen now when it was rolled? The point is, try to think about how these things would work in reality, after all ODE is a simulation of 'real' physics. The cylinders in the Car Demos can all be considered to have a hard surface, as their contact settings are at default values.
Besides the mass, try changing the contact friction, contact bounce, contact ERP and CFM values for your cylinder geoms and make their surface softer like rubber.