Aerodynamics and square shapes generally do not get along. A flat surface does not cut through the air with great effiAerodynamics and square shapes generally do not get along. A flat surface does not cut through the air with great efficiency.In the great quest for improved efficiency, it’s a simple principle that influences the design of nearly every plane, train and automobile. Smooth, wind-sculpted surfaces are the name of the game today, minimizing drag and maximizing performance.Remember back in the 1980s when nearly every car and SUV sold was a box on wheels? That mostly ended in the 1990s when a new era of curved sheetmetal and aerodynamic understanding came into existence.