A vehicle full of rowdy passengers traveling a certain distance to attend a large party.
Often times there are more passengers than seats and people are drinking in the back seat. In an especially rowdy death caravan all 4 tires are flat, pitchforks are hanging out of broken windows and the rear of the vehicle is on fire.
Guy 1: Dude the party tonight is gonna be sweet
Guy 2: Yea and Mark, Steve and Tommy are driving here from Buffalo for it.
Guy 1: I heard they're taking the death caravan
Guy 2: They'll be lucky if they make it here alive