fuel-efficieny

The Toyota Prius and Daihatsu Mira top Japan's official hit list of "green" cars

<img src="http://www.crunchgear.com/wp-content/uploads/2008/04/2008-toyota-prius-hybrid.jpg" /> Japan's <a href="http://www.mlit.go.jp/index_e.html">Ministry of Land, Infrastructure, Transport and To