Energy-efficient automobiles - Manufacturers are using lightweight materials to build more fuel-efficient vehicles

摘要

Using low-weight steel for automobiles (e.g., saving vehicle weight) is one method for increasing energy efficiency, though there are other methods being developed by manufacturers and suppliers. If you wanted to expend the least amount of energy when walking somewhere, you wouldn't carry a backpack full of rocks. Similarly, to improve a car's energy efficiency, getting rid of extra weight helps.