well here we are again!!..i would skip the kitty stuff and get a bag of course sand as it won't get wet and turn to mush under the wheels.some people swear by busted up shells that are used for chicken pens.a few roofing shingles,cheap works better as they are courser,put under wheels got me out a few times.one of those cable pullers that you could attach to something,tree,sign post--whatever--would go a long way in getting you going again...
but i'm not worried--it's going to be another easy winter!!!
right????