Loved the blog Denny and glad Jax had a good time. I'm all for getting kids back on bikes and away from computer games.
Looks like your going to have a couple of future riding partners.
My guess is Jax will be riding a new steed sometime in the future. You'd be surprised what they have out there for kids and keep in mind that there are some good deals on used bikes since they out grow their bikes so quick.
My guess is your already checking out Ebay and Craig's List.