The word that is often coined to describe the armored car that drug gangs often ride in for a number of cases. Most commonly it is used to fight of other drug gangs while being in cover. The car is normally black to allow the car to blend in to the night life of most commonly Mexico. Reinforced steel allows the car's passengers to be protected while in it.
Gang member 1: Shit, what's that coming down the road.
Gang member 2: oh shit, looks like a narco-tank, lets shoot it.
Gang member 1: What are you, loko, homie, lets get the senoritas and go gets some cover mother-fucker.