The Volvo VNL, a heavy truck purpose-designed for North American roads

Enlarge / America sends five times more freight by truck than rail, so it's important to start making those trucks more fuel efficient and safer. (credit: Volvo Trucks North America)

A while ago we checked out Super Truck II, a Department of Energy program that has been challenging the makers of Class 8 heavy trucks—the ones that haul up to 80,000 lbs (36.3 tonnes) of freight. Trunk companies like Daimler Trucks North America and Volvo Trucks North America were challenged to build a big rig that used 50 percent less fuel than the machines on the road in 2017, and they stepped up.

It'll be a while before all of the efficiency improvements make their way onto production trucks, as that program has only just come to a close. But the truck makers are already starting to apply some of the lessons to production vehicles. Like Volvo's new VNL, a Class 8 long-haul truck that's been purpose-built just for our market.

"It's replacing the previous generation that had been around for several decades," explained Keith Brandis, VP of systems and solutions at VTNA. That was based on a global cab concept and design, where this was a completely new clean sheet for North America."