There are some states that allow driving as young as 14 years old, right here in the US. There has to be extenuating circumstances, though. I learned to drive when I was 15, but I had to be "supervised". I don't think that 15 is too young to drive. However, that all depends on the intellectual maturity of the young driver. Hell, nowadays, it's people over 65 that seem to be the bane of other drivers around my area. At least that's what I've observed. Then you have the tards on their cell phones and the damned Okies.