Check out this website
Bark Buckle UP
If you scroll down and click on FREE Safety Kit- you fill out some info- they send you FOR FREE a sticker for the outside of your car saying that there is an animal in the car and that emergency info is in the glove box. THEN you fill out some info- they send you a paper that EMS people can use in the event you are both in a car accident- did i mention it is FREE????