Wipeout and the wagon

Just as we were about to go home on the 4th of July, Casey and Meredith took turns pulling Lucy around the backyard in the wagon. She loves the wagon.
Casey started going faster and faster. And here's what happened (Laura just happened to be taping it). My favorite is that they were all scared to show me the video, as if I'd be upset. Hello, I thought it was funny too! The video is kinda dark, but the speed is real-time.