Check out this cutaway illustration of the new Cadillac One, the armoured limousine which has been custom built to be Barack Obama's Presidential car.
It can withstand rocket impacts and it's perfectly sealed against biochemical attacks
Petrol Tank :Armour plated and foam filled which prevents it from exploding even in case of direct hit
Doors: Eight inches thick,weight of a cabin door of Boeing 757.
Check out other astonishing fact features from the above cutaway illustration.