To say he was excited is an understatement. I put the thing together in the living room, and he sat next to me the whole time, either watching, holding the tools or bike parts, or trying to help out. As you can imagine, the latter was usually the exact opposite of helping out, but he meant well.
An hour or so later--hey, I'm no handyman AND I had distractions--the tricycle was complete and Lucas posed for pictures. This is one of those cases where we didn't have to prompt him to smile. At all.
Here he is on his first "ride." What you don't see in the video (or the previous pictures) is that there is an extra piece that attached behind the seat that allows me to push the trike just like a stroller and I can even turn it. Having pushed him around on the neighbor's tricycle without that handle a weekend before, my back thanks me profusely. It makes life a LOT easier, for any of you mulling over whether it's worth it.
One last thing. You can hear Marilu mention it briefly in the first video, but Lucas wore that helmet from the point we picked it up at Walmart until right before he went to bed. Yes, that includes dinner. We couldn't help but laugh and joke that he looked mentally challenged eating dinner wearing a bike helmet. Hey, whatever floats his boat, I guess.