How can you unlock Yellow Jacket in Twisted Metal Black

You must start in the Junkyard. Then, you mush shoot down the airplane that flies around the Junkyard. When it is shot down, it will make an entrance that will lead to Yellow Jacket (Yellow Jacket is at the end to the tunnel near the other exit). But, you must destroy the controls in the entrance (you'll find it in there). The only way you can destroy the controls is to use your special attack. Congratulations, you have unlocked Yellow Jacket.