I need a knife to carry clipped to the door pocket of my car to help me get out in case an accident traps me inside. I need a folder with one-hand opening, and a serrated or partly serrated blade, about 4 inches long, to cut the seat belts if needed. I also need a glass breaker so I can go out the window in case the electrically operated windows don't work and the door is jammed. I'll probably get two of them, one for the car and one for the truck. Any recommendations as to knife maker and model?