you are underestimating kids... given a proper sized car where they can reach the controls, they do pretty good. My kid has been driving a 12V electric car from age two.
Yeah, not even only farm kids driving tractors. I was riding a motorcycle in first grade and not long after came the era of go-karts (my dad and friends build the local go-kart track). When dad broke his right arm, I learned to shift left-handed from the passenger seat. There was always a bunch of stuff like going to get the car out of the garage and up to the front door that you just let the kids do.
Not many 5 year olds are tall enough to see the road and push the gas pedal at the same time though. The article states that this specific boy looked like he was 8 or 9.
