I just did a wiki and he had a daughter with his first wife and a son and daughter with his second wife. Never seen any pics or photos of his son with him. Wonder if he is into cars? Sadly, what happens is many of these boys want nothing to do with their dad's hobby/career as they grow up.
On a side note this still cracks me up every time I see it. Every thing was so less serious back then...lot of fun. The 60's and 70's were w/o a doubt probably the two best decades to grow up and live...Vietnam war, and other warts and all. Today, drivers have to get their sponsors permission before taking a crap. I am so grateful to have experienced the '70's ,, the music, culture etc. (sorry to get off tangent)