Ivan L. Head

Each year, at a place called "Magnetic Hill," visitors to Canada by the thousands park their cars at the bottom, place the gearshift in neutral, and sit in delighted astonishment as they glide gradually but inexorably up the hill. The whole exercise is an optical illusion, of course. The cars only seem to be coasting uphill; they are actually going down. The tourists know this, but they come anyway. It's not the feat that is the attraction; it's the illusion.