[aerohead]

The EPA granted a conditional SmartWay designation to Rocketail based upon 1/8th-scale wind tunnel testing submitted by Rocketail, and on-road fuel economy testing by Messilla Valley Transportation in New Mexico.
The EPA did not conduct nor solicit any 3rd-party, independent evaluations to corroborate results and conclusions.
Messilla claims an improvement from, 9.20971 mpg, to 9.5238 mpg, 3.58-gallons saved per 1,000 miles, a 3.36% improvement.
According to the NHTSA, a 10% drag reduction will net a 4.8% improvement in mpg for a Class-8 tractor trailer.
A 3.36% mpg improvement implies a 7% drag reduction via forward lift and wake modification according to an 'all-star team of industry professionals, engineers, and testing partners.'