The foundation of armored transportation goes as far back as the movement of big cargo. Traditionally, smaller valuables were transported in a more'cloak and dagger' style. Carriers would attempt to match with other travellers so that they didn't reveal the value of their cargo. This strategy doesn't work, but when the precious cargo is big.
Early transfers were caravans with armed personnel. Even Spanish galleons were armed with cannons to combat would-be thieves on excursions to the New World. Afterwards, stagecoaches eventually become common. They had been outfitted with strengthened lockboxes while guards 'shotgun,' literally carrying out a shotgun for defense. This is the source of the colloquial term now shouted to secure rights to front passenger seat.
Tanks, armored personnel carriers, and even an armored Rolls-Royce were created in the 1910s for the new kind of military battle. Armored cars allowed for mobile anti-aircraft guns as well as for secure movement of valuable cargo. The success of those vehicles directed a Chicago company named Brink's to beginning armoring school buses for carrying currency in the 1920s. The Brinks armored bus has been closely followed with a Model-T full of armed guards.
Many pieces of those early armored automobiles were still made of vulnerable substances. Through Autos blindados usados , the substances utilized in armored transport have shifted from glass and wood to more durable and bullet proof material. Steel is now the most common armor for vehicles. It is hardened by heat treatment or by the addition of nickel and chromium through creation. Windows are now made from thick plastic glass and bulletproof optical plastic.