My Wife drives a 2013 coupe and the other day she said she heard something rolling around in the roof area when she goes around a corner. So today I pulled the headliner down on the drivers side enough to pull out a dozen acorns! Obviously chipmunks or some rodent stored them in there when we weren't looking, but how are they getting up there? The only place I could think of was up the A pillar, but checking under the hood area, I don't see any openings. She drives the car everyday, 25000 miles in the one year we've owned it, so it not like it's sitting in storage. Any Ideas?