He sure is. In fact they have to move him up an age class for the Special Olympics. And since I can no longer run, & a quad turns so darned slow, I had to go to 3 wheelers. They turn fast enough to keep up with that little bugger ;>) ! I do wear a helmet & so does Nicole, just to chase him and catch him.
Good on you Dad for adapting & so glad you wear helmets!:)