[theoshin]

hybrids are not going to help you at 70mph in a 5500-6000lb truck. that is why highway milage is not much improved if at all in truck hybrids. the cheby has better aerodynamics, lower profile tires, etc to get 1mpg better highway. hybrids store energy from stopping. good for stop and go but near useless on the highway at speed in a heavy vehicle. towing - forget any real improvements - the gas engine will be running the whole time. plus how long do they last and how much energy does it take to make a hybrid - how green would a truck hybrid really be???