Front body: VAMP
Rear body: STUN
Bullet proof glass: bank teller capsule
Armor: Cab off of the Corps patrol boat, door off of the Mega Marine APC, and an A/C grill
Gun: Corps patrol boat

Well I figured if Cobra Commander really planned to take over the world he would need a parade car, and considering he probably wouldn't be a popular dictator he would need to take every precaution.