We can't drive a car without having been taught either.
Granted, the amount of training required to drive a car pales in comparison to flying an aircraft, but it's not like humans can just drive a car straight out of the womb.
If it's an automatic, you only really need a vague cultural awareness of what a car is and how it works I think. (Ignoring driving well, fuel efficiently, understanding road markings, etc. - just enough to get around and improve as you go.) Push this to go, steer direction with this. Quite like a boat (motor) - certainly don't need lessons to get going with a wheel and a lever, or directing an outboard motor or rudder.
Granted, the amount of training required to drive a car pales in comparison to flying an aircraft, but it's not like humans can just drive a car straight out of the womb.