Today Daddy and I set up one of my Christmas presents: a Hot Wheels race track that you attach to the wall. This way you can kept it off the floor and out of the way. Neat, huh?
I discovered that not all of my cars will make it all the way down the track (some are too heavy to get over the first hump) and that the force of gravity and the momentum of the cars is what makes them speed down to the floor. OK, enough science for one day. All I know is it's really cool! If one of my cars didn't make it down the track, I would hand it to Mommy and tell her, "this one is not so good." It was quite an experiment.
For your viewing pleasure, here is a little video of how my track works. I love it and made the cars go down over and over and over again. I think Mommy and Daddy are starting to rethink this Christmas present just a little bit. Insert a big sigh from Mommy here.