For the last year or so I’ve been waiting for the acceleration slidewalk at the Toronto Airport to open. One day last March I saw it running, but never since. It works a bit like an acceleration ski lift. The hand rests and the tread expand for the first 10 meters or so of the slidewalk as it starts, moving faster as they expand. It looks like it runs about twice as fast as a regular slidewalk – nearly a jogging pace. At the end it slows down as the treads compress into each other. I can’t wait until it opens.