A lot of trucks on the road could get close to that if it weren't for the EPA. I know a couple of guys getting around 9 mpg right now, with big engines to boot.
They make truck manufacturers put all of the garbage on the trucks that inhibit good mileage, and then give them millions in grant money to improve fuel consumption.
Brilliant!
The SuperTruck would save a typical long haul trucker around 10,000 gallons of fuel per year, which translates to over $28,000 at today’s prices