Your car is frozen shut like a giant block of ice! I went to leave for work this morning, tried to open my driver side door and nothing! FROZEN!!! I attempted to continue pulling but no luck! So I tried all the other doors on the car...FROZEN! WHAT?! So I ran inside filled a pitcher full of HOT water (Thank goodness our landlords turned the water heater up so high that our hot water is pretty much boiling strait from the tap) I then poured the hot water on my car door and watched it all melt away. Worked like a charm. I am done with winter!