Even though you want to keep your bow ready at a moments notice so you can shoot, I would highly recommend that you not store it in your trunk. Put it somewhere with a controlled temperature, as if you don't, you could spend more time getting it fixed if something happens due to where it is stored. Then you wouldn't be shooting for awhile. In the end it is your bow, but in my opinion, you would be better off keeping it somewhere more controlled. Good luck.