The BMW
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Towards the end when Casey is throwing the bodies out...he remembers Nick's voice telling him about going on a vacation and something about a spare tire around his waist...then Casey looks at the BMW in front of him and that gives him the idea to cut open up a spare tire cuz thats where the money would be...Was that BMW important at all? Because the tire wasnt from the BMW it seems like Casey just looked at it and saw thought ohh spare tire...I dont even know if what im asking makes sense, hopefully someone knows that im saying lol.