In the days before air conditioning, eating chocolate in the summer was a messy affair. Legend has it that Forrest Mars Sr., son of the founder of Mars, Inc., got the inspiration for M&M'S® candy in the late 1930s. On a trip to Spain during the Spanish Civil War, he encountered soldiers eating pellets of chocolate encased in a hard sugary coating that prevented it from melting. Back at his kitchen, Mr. Mars invented the recipe for the M&M'S Plain Chocolate Candies just in time for M&M'S to become a favorite snack of American soldiers in World War II. In 1954 the famous slogan "The milk chocolate that melts in your mouth-not in your hand"® debuted in the first M&M'S candy TV ads, and in 1972 the candies became animated characters. Add the color and humor of the M&M’S Spokescandies to your own railroad with this twin-motored diesel freight set and additional M&M'S cars.