Up until now, Jackson's "bike" has actually been a tricycle. Santa Claus changed all of that with the delivery of a big boy bike made for Jackson. He was pretty excited once the sleep wore off and he realized it was just his size.
The trick is going to be getting him to actually pedal. Right now, he is into only putting on the brakes or foregoing riding altogether and walking beside the bike instead of riding! I have a feeling by this time next year, though, he'll be an old pro!