The truck emitted absolutely nothing but water vapor from its tailpipe ... The vehicle can provide 25 kilowatts of power from its fuel cells for up to 72 hours without refueling, which is ...

All that power was essential as, on top of hauling around the truck’s huge frame, the V8s power two massive water pumps. At each end of the enormous truck is a 1,250-gallon-per-minute pump that ...