Cars or any engine with carburettors are subject to carb icing, however they normally have a small pipe from a hot spot on the Exhaust Manifold to the Carb/Air Filter, this is controlled by a simple Bi-metallic strip.
In aviation I assume this system is not used because the pilot needs to be able to control the heat / power requirement.
It's not a problem if your car is a little slow on the way to the shops !