Today we are at the National Children's Castle. We haven't seen much of it yet because Ellie and Trip have been working for nearly an hour to master these little carts. Each wheel turns independently with a handle so moving forward in a straight line takes some serious thought and coordination. Has anyone ever seen these or know what they are called? We are calling them wheel carts. Trip seems to be picking it up faster than Ellie so for once, he got to win a race and Ellie didn't even pitch a fit about losing like Trip usually does.