There is no question that aerodynamics is a major factor in fuel economy. With that said, how do we determine which device or combination of devices is worth the time, effort, and
investment? Each company producing these devices have their test results and customer comments to back up their stated claims. Some devices are battle proven but others are
yet to be readily accepted by skeptical fleet managers already inundated with numerous fuel saving devices.
As you view and search the advancing technology available at the various companies listed here it's easy to see that the maximum efficiencies are yet to
come. The growing concern for the environment and the continuing rise in fuel cost will make converts of skeptics as more fleets realize the proven value of added
aerodynamics. Companies will pick the device or devices based upon their own operating circumstances.