Executive Summary This book projects how cars might evolve by 2030. It does so by looking at key technical trends evident in the present. The mega-trends this books looks at in detail are better fuel economy@ alternative sources of fuel@ and automated driving. The first chapter summarizes key developments in vehicle technologies. This base sets the stage for the future. Chapters 2@ 3@ and 4 look at trends and predict the future of technologies that have been with us since the beginning of the automotive age??internal combustion engines@ transmissions@ vehicle bodies@ and materials. The theme in these chapters is that as fuel prices and availability continue to worry us all@ engineers will refine these technologies to deliver better fuel economy. New valve technologies; widespread use of boosted@ downsized engines; and direct fuel injection will deliver engines with better fuel economy@ possibly as much as 30% greater. Downsizing cars will result in greater fuel economy. Materials that are more lightweight will contribute some as well. However@ there is a limit. These technologies still require liquid fuels@ which at present mostly come from petroleum.