CafeVelo

Today I went out for a ride, and severely underestimated the temperature and wind chill, the temperature was 28, with 10 mph headwind and I was dressed for 40 degrees or so. I actually started out too hot. I was grinding along, and about 10 miles from anywhere I started getting the early signs of hypothermia. 30 minutes or so later I stumbled into my favorite bike shop (the closest place I could stop) a few minutes before closing, and the owner (who offered me a job yesterday) dropped everything to help me get warm, gave me a change of clothes, and drove me home. I'm convinced he saved my life. My question now is, what should I do for the guy? He not only helped me get warm and back to reality, but took time out of his life to make sure I got home. That's way beyond what I expect from the best shop I could imagine. I should at least send a card or something right? What would you do?