This is a short video of Cz learning to ride his bicycle without training wheels. He's 3-1/2 at the time. While this video doesn't have anything to do with motorcycles or ATVs, I think it is definitely a prelude of things to come in Cz's future with motorsports in general.

There are a lot of racers out there that started very young, and a lot of them started out racing BMX. There are a few that do both BMX and motocross.

As he comes around the back side of the play-fort, you can see him stop and start again. (Not sure what he's doing back there, but I think he's practicing a skid before he gets into full camera view.) Once he starts again, he comes down in full view and does a short skid while slightly sliding the back tire sideways. Very BMXish.