Kettleman may not be on line so I'll try and help. This is the definition of a class 8 truck.
Class 8. The Class 8 truck gross vehicle weight rating (GVWR) is a vehicle with a GVWR exceeding 33000 lb (14969 kg). ... The typical 5-axle tractor-trailer combination, also called a "semi" or "18-wheeler", is a Class 8 vehicle.
Basically, it is what most companies use to haul their goods / commodities over distance. The class 8 sometimes called an 18 wheeler, is what you see going up and down the interstate system.
Sales of trucks are also an indication that the economy is doing well. The new introduced CMI/Westport 12 liter NatGas engine would be used to power the class 8 truck. More sales means more NatGas engine are being sold. This means CLNE and WPRT should be benefitting from this upward move.
All this while diesel costs are at a record high. NatGas saves the trucker 50% on fuel costs. Many truckers are making the switch. Check out the latest from CLNE and their new financing offer.