I found a great tool that can be purchased from Galls for $10. It's called the Res-Q-Me (item # FE388) and it is a window punch and seatbelt cutter that fits on a keychain. I haven't used it in an emergency situation yet but in training it worked very well. For $10 I got one for my work vehicle and one each for my personal vehicles. Whether it's for my vehicle if I am in a wreck or I need to get someone out of theirs in an emergency, I feel much more prepared.