Ants have invaded my car. Best way to get rid of them.

I have had to store my car in my friends back yard for the last five weeks and I am getting ready to move it. I came over today and for some reason ants have turned the trunk into their home. There is no food in the car, I made sure it was clean before parking it, but they turned one box in particular into their home. When I opened the box, thousands of ants came rushing out. There's eggs in there and everything. I don't really want to take them to my new place, and really don't want them in the garage at the new place. Any ideas how to kill them/rid my car of them? It's crazy how short of a time it takes for a car to have rodents move in to the engine and basically get overtaken by critters.