Joshua hits 19.1 mph!

I took Joshua for a 5 mile ride on the trail yesterday. It's smooth and flat and you can go fast. We decided to see how fast he could go. I rode behind him and called out his pace...13, 14, 15, 16, 17... on his first speed attempt he hit 18.3. On the second sprint, 18.6. I asked him if he thought he could do 19. He said "sure." 3rd attempt: 19.1mph! Speed demon. Here he is after the ride.