研究了许多大家总讨论的问题。
page by page: http://tinyurl.com/2ocolk
full article: http://tinyurl.com/2nywb2
全文如下，不过原文还有许多charts
Safer Vehicles for People and the Planet
Motor vehicles contribute to climate change and petroleum dependence.
Improving their fuel economy by making them lighter need not compromise
safety
Thomas P. Wenzel, Marc Ross
click for full image and caption
Fig. 1. SUVs are prone to roll over
The cars and trucks plying America's roads and highways generate roughly 20
percent of the nation'
