Your eyes do not deceive you. This is essentially a human-powered Conestoga wagon going down the stairs of a historic building.Old Post Office, Washington DC
"Simplistically brilliant!" -- R. Roach, Shreveport, LA
Way back in 1982 in junior high (middle school), I sported no-name tennis shoes. I got teased mercilessly. I begged Dad for name-brand shoes. He asked, "What's wrong with the ones you've got?" "The kids call them maypops." Dad called them mo-pops after that. There was even a song: