Here's video evidence of his first ride; I actually took a video before this, but half the video is me chasing me making sure he didn't drive right into the middle of the street:
He loves to go out and practice his new trike skills. Every time we walk out the door, he wants to get on his trike and ride. Mailbox... check. Around the block.... check. Up the hill... a little bit of a struggle, but... check.