 Driveability - abysmally dangerous. The engine decelerates at irregular, random rates making shifting incredibly challenging. Shifts on flat road may take up to 5 seconds to complete (on uphill grades, they might only be done by slipping the clutch). Truck will accelerate by itself to over 2500RPM even in gear. Engine braking is negligible and may turn into acceleration. Dealer says this is normal. The shifter Low/Reverse lockout works sporadically. The fuel tank sloshes when over half-full (sounds like a loose baffle). Truck is taller than the 6'8" specs so wont fit in most garages. Fuel hog despite advanced technology. Engine vibrates. Roof drains into open door or window, onto switches!