slang insult commonly used to describe a ridiculous, nonsensical idiot. The term originated in the west being used to describe the transportation system for prostitutes , hoes, tricks , scalawags, bitches and nappy headed hoes
Out west you better not get caught out in the Jack wagon.
Large Tow Truck. The really big on that tows Big Rigs. Also referring to the vehicle used by the Military to haul Main Battle Tanks on flatbed trailers, which is where the term originated.