Examining the history of armored cars in the 20th century. Also: vehicles whose protection is concealed. Included: the presidential limousine; live-fire demonstrations. Armoured cars are now considered almost essential for all high-profile figures in dangerous parts of the world. But President?s vehicle is thought to be the most advanced ever.Has your car passed the latest crash-test standards? Maybe so. But if you are the leader of the free world, then you?ll be looking for a little bit more than passenger air bags.