I have been thinking about getting a road id also so it is good to hear of preferences and what to put on it

Another idea I heard was to put ICE in your cell phone contact list.

ICE - In Case of Emergency and have it linked to whoever you want called, I was thinking you could do ICE2 etc if you want more listed.

I don't really know if emergency people would actually check but I thought it was a pretty good idea and I always have my cell phone with me