As automakers compete for the hearts and pocketbooks of consumers on the basis of environmental impact, they will quickly be forced to build lighter vehicles.
Lighter vehicles require less power to accelerate, climb hills, cruise, and stop.
Lower power requirements mean smaller, lighter, lower-cost drivetrains and more efficient operation. In order to meet the environmental demands of consumers, automakers are already looking to new materials to reduce overall vehicle weight. The Insight's body relies heavily on aluminum structure and plastic panels to achieve 47 percent less weight than a comparable steel body. Similarly, Ford's P2000 prototype is 40 percent lighter than the same size Taurus because of its use of aluminum, carbon fiber, magnesium and titanium. A breakthrough in vehicle design and manufacturing is needed to meet the demands of consumers.