Preheat A Grill For High Heat. When The Grill Is Hot, Lightly Oil The Grate. In A Medium Bowl, Mix Together The Egg, 1/4 Cup Of Cola, Crackers, 2 Tablespoons Of French Dressing, And Parmesan Cheese. Crumble In The Ground Beef, And Mix Well. Form Into 6 Balls, And Pat Into 3/4 Inch Patties. Pour The Remaining Cola And Dressing Into A Small Bowl, And Mix Well. Grill Burgers For About 3 Minutes Per Side. Brush With The Dressing And Cola, Then Grill For 8 To 10 More Minutes, Basting Occasionally.