Winter Car cover idea's ?

I bought a car bag for my Dart and used it for the first time last year. Pulled the car into the back garage and threw in about 20 desicant packs and zipped it up and it came out in the spring just as clean and dry as it went in.

It gets real damp here in Michigan and the early spring is always rainy and damp and the bag seals all of that out. I just wait until the weather really breaks in mid April and unzip it and start driving. No more spending an entire day cleaning off the oil coated chrome to keep the rust from starting.