Greenest
http://www.cnn.com/2007/US/07/06/gre...est/index.html

# 1 Honda Civic GX
# 2 Toyota Prius
# 3 Honda Civic Hybrid
# 4 Nissan Altima Hybrid
# 5 Toyota Yaris
# 6 Toyota Corolla

Meanest
http://www.cnn.com/2007/US/07/06/gre...est/index.html

# 1 Volkswagen Touareg