This is the model I have in both cars https://edcdepot.com/merchantmanager/product_info.php?cPath=4&products_id=82 I keep it ziptied to the gearshift. Easy to find and it should stay put during an accident. Even though I usually carry a knife and it is unlikely that I will wind up in a body of water, I still keep it in the car. Reasons being are 1)the door may be jammed shut from the accident and I may need to break the window to get out 2) I cannot get to my knife in my pocket due to an injury 3)my passenger may not be carrying a knife. It's a small piece of insurance for under $10. It sure beats an autohammer in the trunk.