Heat oven to 350F. Grease and flour 6 loaf pans, 4 1/2 x 2 1/2 x 2", and 1 layer pan, 9 x 1 1/2". Prepare any flavor of layer cake mixes as directed on package except - fill each loaf pan 1/2 full with batter; pour remaining batter into layer pan. Bake loaves 20 to 25 minutes, layer 25 to 30 minutes or until top springs back when touched lightly. Cool.
Place loaves top side down on large tray or individual serving plates. (Use layer as desired.) Prepare chocolate fudge frosting mix as directed on package. Frost loaves.
Use candy circle mints for wheels and candle-holders, a large gumdrop for the smokestack and a sprinkling of one of the following on each of four cars for "cargo": nonpareils, red cinnamon candies, peanuts and colored sugar.

*Serve with grilled cheese sandwiches, dill pickles and milk.