John and I kind of do something like that now. We carry around the packet of information we made for MTB 101. Granted, it's a packet and not a nice neat card. There is an overview of our club and membership application, a list of our local bike shops, a list of the area mtn bike clubs (LAMBA, ICORR, PAMBA, CAMBR, CORBA, etc.) and their web links, info about trails within 2-3 hours of here, and some IMBA info. We give out 15-20 a year. A card is a pretty good idea.