From microcars to high-end speedsters, future cars will share one common theme — controls through touch screens rather than buttons, if the concepts of last week's Geneva Motor Show are any indication.

So how do you control a car with no buttons? If you ask us, the only inputs you really need are the steering wheel, gearstick and pedals. Be that as it may, find out how auto designers think our future cars should be controlled in the gallery above.