simple concern

So Bella has become really interested in driving a car. And as a mother that makes me a tad bid nervous mainly because she is 4. "Mom one of those pedals make you go fast and other one makes you go slow," says Bella. Well do i tell her which one makes her go slow just in case she happens to take it for a spin around the block or thru the garage, or not tell her at all? Well it was bound to happen with a dad that had her involved in moving objects since she was a small little chicka. I'm just hoping it just a phase and it will pass till she pre teens!