I had never heard of it until we lived in Chicago for two years. My sister and her so had made such a fuss about it. There it is on the commercials, radios etc. Once back in NJ dh and I forgot all about it. You don't hear of it here. So we will do nothing. I am however, getting new tires for my new jeep wrangler. Once this is done I can take it on the beach. Cool.