I really beg to differ lol and I imagine many instructors would say the same.
Humans who have never driven before are not capable of driving unsupervised and there are a lot of laws in place to make sure they don't get the chance to.
A teenager isn’t going to try to accelerate by turning up the volume on the radio or opening the window but an AI with no training would have to try those kind of things.
That would depend on the specifics of the AI, even without training on driving, it could still have some knowledge from seeing others drive or being able to identify the symbols on the controls or playing racing games. No training or prior knowledge seem an unfair comparison, that would be more like asking a newborn baby to drive.
If they'd never been inside a car before or watched others drive on TV etc. I wouldn't be so sure - fiddling with the volume knob seems a likely enough experimental approach.