In the Canadian province of New Brunswick, there is a hill where very extraordinary things happen. If you park the car at its bottom and put it in neutral, the car will start rolling (without anyone's help) back up the hill, that is, uphill. True, this amazing fact is not evidence of a phenomenon that many people might think about.
Many people take this phenomenon as evidence of an extremely powerful magnetic field in the area causing cars to move back up the hill at speeds in excess of 30 kilometers per hour. However, this phenomenon has nothing to do with magnetism. How then does the car move, you ask?
The whole point - you won't believe it until you watch the video and the image below - in an optical illusion. For clarity, watch a video created by Kokichi Sugihara from Meiji University, which shows a similar principle of this amazing "phenomenon".
Of course, here it is difficult not to be surprised to see how wooden balls rise up the slope of the shown structure. Enhances the effect of recognizing that no magnets are being used here. So how do the balls roll "up"? And they roll "up" thanks to an optical illusion that deceives your brain. And this becomes quite obvious soon after the improvised construction is turned to the other side of the beholder.
Of course, no one can "rotate" the Canadian "Magnetic Hill", as it is called here, to get an idea of a different angle, but the construction in the video above gives a clearer idea of what actually happens to the hill and the human brain in this moment.
People who talk about their cars rolling uphill are not lying or wrong. It's just that they don't see the wheels of their cars spinning at this moment. As a result, the optical illusion makes them think that the car is rolling up, when in fact it is rolling down.