The grand prize winner will be announced at the Great American Trucking Show Aug. 23-25 in Dallas.
An Overdrive editor is impressed by the strong, quiet ride when he takes this Navistar tractor out to see how it performs.
Navistar is developing natural gas-powered engines for Class 7 and Class 8 trucks and Clean Energy is building LNG fueling stations.
Designers integrate ProStar+ with MaxxForce 15-liter for strong, quiet ride.
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