So this is what happened..... I stopped at the beginning/bottom of this road - I put my car in neutral with the engine still running and took my foot off the pedals. Slowly, the car started to move forward/upward. My car kept on going up the hill all on its own. Its not a very steep hill, but if you look in your rear view mirror - you are CLEARLY going uphill. I stopped the car halfway up and turned on the water faucet by the trash receptacle and watched the water go uphill. I had a ball in the car that I put on the ground and kicked it downhill...... It went only so far and then stopped and also slowly rolled upward.... By the time it rolled back up to where I was, it had picked up some speed. Very interesting. Ive taken my kids, all their friends and everybody I meet to experience this.