I carry my License and Health Insurance card... I typed contact info for my husband, father, and stepmother and taped it to the back of my license! This way, too, if someone changes a phone number it's an easy (and cheap) fix for me to do.

I'm going to do the same for my husband, who spends a lot more time on the road (cycling, of course)... he has been hit twice in the past ten years... at least he was able to call me himself from the hospital, otherwise they would have had a hard time finding me!

I'm sure there is the chance I could lose the license, and that the ID would be more secure, but money is REALLY tight (and I just bought a jersey... okay, two jerseys - hey - at least they were on big sale!), so I simply don't have the $20 or so to buy one.