The American Council for an Energy-Efficient Economy (ACEEE) has released its annual report for the greenest, and the meanest, vehicles prowling American roads. The council takes many factors into consideration when compiling the list, including the manufacturing process.
This year, General Motors scored two places on the greenest list, and one place on the meanest list. Not surprisingly, the greenest list is heavily dominated by electric vehicles, which have slowly begun replacing hybrids as more efficient, and more commonplace.
But, GM has a dirty bird on its hands. The Chevrolet Express and GMC Savana come in at number two for some of the least efficient vehicles on the market. That includes the manufacturing process for the bulky work vans.
You can check out how the ACEEE comes to its conclusions, and explore the entire list of cars right here.