Wal-Mart's goal is to have the trucks driving cleaner by the end of next year. Some will, and the rest will follow by 2010. Wal-Mart is reducing truck fuel use by getting Great Dane Trailers to develop a more aerodynamic trailer and with investments in hybrid diesel-electric engine development. Since 2005, Wal-Mart has been trying to use green issues to get on critic's good side and save money. Both are happening.
The Sierra Club's global warming program director, Daniel Becker, says that there's still plenty to criticize Wal-Mart for, but in the greener trucking issue, the company should be commended. The trucks in Wal-Mart's fleet that have been greenified are now about 15 percent more efficient (7 mpg vs. 2005's 6 mpg). The AP says that "cutting the average mpg by one gallon saves Wal-Mart between $35 million and $50 million a year."
I agree that there's a seemingly endless amount of ways to criticize Wal-Mart, but this is good.