2mpg is 12.5% increase, so I guess it' pretty impressive. But I don't see the point in having hybrid trucks in the first place, at least not yet. They can concentrate in area that can make bigger difference w/ hybrid, like passenger cars. They tend to get driven more in longer distance and they can get even better gas mileage by using smaller engine. Smaller engine for trucks is not as logical since they need the tq from the larger engine.