Oh nic, that is SO COOL!!
I always seem to have stuff in my car. The other day on the way to the shop I saw a girl I always pass (usually she's riding) walking her bike down the hill. She was 5 miles from the nearest anything, so I pulled over. She had a flat, and the glue in her patch kit had dried up, and she didn't have a spare tube. I gave her a tube, and got helped her change it.
I also believe that it's all about good bike karma!