If Wal-Mart lives up to its promise, the
retail giant’s entire trucking fleet will double its miles per gallon within
the next 10 years.
Beginning with the its 2007 model-year trucks,
the company will begin introducing a truck with improved aerodynamics,
transmission, tires, as well as an auxiliary power unit in every truck in its
fleet. By 2015, Wal-Mart expects its entire fleet to reach 13 mpg – approximately double its current fuel economy, according to The Associated Press.
According to a company press release, one of the most visible changes
to the trucks will be wind skirts, which flank each side of trailers between
the axles to reduce wind resistance and reduce airflow around the trailer.
Wal-Mart will also replace the dual tires on its trucks’ rear axles with
extra-wide single tires.
Additionally, the tractors will be more much more aerodynamic than
those in the current fleet, according to the company
H. Lee Scott, a spokesman for Wal-Mart, told The AP that the mileage increase would save the company $52
million per year.