Hills

So I was driving home from work and I had to go up this semi-steep hill with a little bit of snow on it. When I was almost at the top, my car started having trouble. I waited for a minute and then went up the hill. Then I was on my block another semi-steep hill and my car got stuck again. The snow just lightly covers this street. I turned the car off, waited another minute and somehow got up the rest of the hill. The wheels were moving, but the car wasn't. I drove the same route Monday and the car was fine. It seemed OK on the way to work...maybe there aren't any steep hills. Anyone have any ideas??? Thanks.

If the wheels move and the car doesn't it just means you're losing traction. What kind of tires do you have? Mine are all-seasons (Nankang brand) and I don't really have any problems. Also, perhaps there was some ice under the snow that you couldn't see?