They drop as a loot item during the Invade Tong-controlled Neighborhood mission in the Hitman job tier. You can also occasionally find them after a successful fight or a member of your mafia that has one can gift it to you.
You can find the armored car after chapter 6.
You can get the Armored State Car by completing the "Storm The Presidential Palace" job which is a job in Cuba.
Actually "The armored car" is in New York..Under the Hitman tier... "Invade Tong-controlled Neighborhood"
do the job Storm The Presidential Palace
Cuba (El Padrino) - Storm the presidential place
You can only find the Armored Car as a loot drop item when you're doing the "Invade Tong-controlled Neighborhood" job which is in the Hitman Tier.
(20.09.09) Smuggle Across the Border under ENFORCER job tab
Hitman job Invade Tong-controlled neighborhood drops an Armored Car as loot.
You can get the armored TRUCK on the .......Enforcer - Smuggle Thai Gems
BJ
There are 2 different Armored Cars in game.The first is an 'armored car' you get by doing the job Invade Tong Controlled Neighborhood under the Hitman tier in New york.The second one is a 'Armored State Car' which you loot in the Storm The Presidential Palace job under the El Padrino tier in Cuba.El Padrino mission - Storm the presidential palace
armored briefcase is looted from the Map out an escape route in the Brigadir job tier in Moscow.