Whenever I leave my purse in our truck, my DH says "don't blame me if they break it to take it!!" I either hide it on the floor under something, or cram it under the back of the front seat if I have a small enough purse with me. But Kathy is right...not a good idea. If you can put it in the trunk of the car, that's a differnt thing. But if the car is running........well, that is certainly a different thing!! LOL