Dude, get a small $40 butane camp stove. Two weeks is a long time to eat cold food while living out of your car in a parking lot. Waking up at 6am in a cramped vehicle and putting on cold wet ski clothes is a lot more manageable if you can cook a hot bowl of oatmeal for breakfast. Trust me, I've spent many weeks living out of my car at resorts. It will be well worth it.
Peanut butter, protein bars, etc. Bring some things like that so they can give you some energy since you will be run down from living in your car. Pop-tarts and other sugary things are just going to make you feel super sick after a few days.