The Black Tank is a powerful tank used by the Black Arms that appears in the Lethal Highway stage, in which the hero mission is to destroy it.
The Black Tank somewhat resembles a stealth bomber with a tail. It is jet black in color and covered with a substance made by the Black Arms.
The tank is surrounded by two shields that can withstand many attacks until its' defense is broken, but it oddly enough possesses no weapons of any kind. Possibly, it is not a tank but simply some kind of armored troop transport for the Black Arms.
The best way to defeat the Black Tank is using a rapid-fire weapon, preferably from the Black Arms though the most effective weapon is the Shadow Rifle and the Gatling Gun which can be obtained behind the five-key door, with the maximum of forty ammo, it can easily take out the tank in below ten seconds. The tank has two shields, the first is blue and the second is green. Once all the shields are gone, it begins to leak black gases from its armor until it is destroyed.
However the lack of any special weapon obtainable from beating story sequences, it will take a few minutes to destroy the tank since the tank hides astray at some points of the level for a short period of time.
Oddly Sonic states that guns are useless against the Black Tank, yet the best way to defeat it is with guns. That said, Sonic may have been talking about when the Black Tank's shield is up.