Midnight. I'm coming back from a trip. It's 8 degrees, and the gusty wind cuts to the bone. I take the shuttle to the economy parking lot, and luckily, my car is still there. I click open on my key fob, then I pull at the handle. Nothing. It's frozen shut. It snowed during my absence. There is no one around. (1) What do I do? (2) What should I have done to prepare for this?

In reality, I was able to find a door that wasn't frozen shut, and I was able to open the other doors by pushing from inside the car. Then I grabbed the deicing spray and sprayed down the winters. But how can winter travelers protect themselves?