I just got a Green Mountain Grills Davey Crockett. This is their tailgater model. The legs fold up to become a carrying handle. And they have just come out with a WiFi version that connects to your smart phone, allowing you to control the grill and monitor the food temp using your phone.
It runs off 110v, 12v (cigarette plug), and also comes with alligator clamps so you can use a frestanding 12v battery. Used it only a couple times but I can tell I'm REALLY gonna like it. You just can't beat the flavor that wood smoke adds to anything that is cooked on a grill.
I think it should work just as well as a larger model - the process is exactly the same. I think I read somewhere that a 15 pound turkey will fit. I know it has enough room to cook 2 whole chickens.
Tim