I had one of those too. As far as the commercial goes, the steps in the commercial are half the size of a regular stair. Regular stairs are wide enough for you to have your whole foot rest on each as you go down. In the commercial they're probably half that width, which is why they could make it go down a bunch of steps, one after another.Remember This??? I used to own this, but unlike the commercials I could never get them to take more than one or two steps and then they would stop.