Car forums seem to be full of cars breaking down because of faulty sensors and faulty gadgets. There were far fewer problems when drivers drove their cars using their bodies as sensors and their brains to do the calculations, before sending the instructions to the rest of the body. Please add your unnecessary sensors and gadgets to the list:-
Tyre pressure sensors - regular tyre pressure gauge check or a swift kick!
Cabin temperature sensor - If it's hot turn it colder and vickey verkey!
Lane assist??? - That's just taking the p. Just drive the thing and concentrate.
etc., etc.