That does sound like this same stuff. Wonder if it works....
My dad always told me to carry bags of cat litter in the trunk. This was before the days of front wheel drive, so the weight helped to give the car traction. Plus, if you got stuck, you could open the bag and dump some under your tires to give even more traction.
These days I just try to get a running start if I need to go up a slippy hill. What does anyone else do about the traction issue?