I have had 5 different ICE car slide down the drive in winter the exact same way... I suggest that a number of people here should go back to school and take a few Physics classes. It is simply a coefficient of friction, at the point where friction becomes low enough the car will slide... There is nothing wrong with the car.
Exactly. I found our Enclave in the middle of our street once. Was glad it didn’t bounce off the opposite curb. Now, whenever there’s snow or ice in the forecast, I play Junior Ramp Agent and chock the wheels. Problem solved.
I believe that you can solve this problem with oil dry (auto parts store, 40 lb. bag). When you park the car, remove the snow behind each wheel on the downhill side the width of the tire about a foot long. Add oil dry about 1/2 inch thick for about one foot long, the let the car roll back on it and park. I carry two cans (holiday popcorn cans) in the frunk when traveling in winter, and keep it in the garage if needed for ice on the driveway. We don’t have much snow in Georgia, but it is nice to have if needed. It also is good for drying up water spills from hot water heater’s, frozen pipes, etc. Good luck, Handlebars
I spent a good part of my life living in ND. Many secondary roads in ND are not plowed, no sand or salt, and one get a skill for driving quickly on ice and learns what is dangerous. When the ice is very cold, traction is good. When the temp is close to melting or melting the traction is much less. If your tires are warm from driving and the sun has warmed the dry pavement and you pull onto a icy drive with a slope there is a risk. The tires are hotter than a melting temp and the surface on the ice gets wet from melting from the heat of the tires. When the car starts sliding it will keep going. This is not unique for a Tesla. Unfortunately, just physics at work!