security secrets in obama`s car..!!!

It is known that the heads of state cars in general prepared to face the guns, grenades and explosives, a car, but President Barack Obama could face attacks with chemical weapons and missiles.
Car called the Secret Service agents assigned to service the President the name of "tank" and are being developed by General Motors Corporation, which refuses to give any specific details about the car that is more armored vehicles safer.
And that it will offer us a part of the documentary "Secrets of the Secret Service" which talks about the military services and escort accompanying U.S. President Barack Obama