5. Franklin D. Roosevelt, 1939 Packard 12
Presidential historians know this car from the iconic images of Roosevelt riding in the back of the open-air convertible. But the 12-cylinder was such a unique piece of technology that Roosevelt said he couldn’t do without it. It has the distinction of being the first car to be armored, during FDR’s presidency. The car currently resides in Toyota’s Automobile Museum in Japan. This image is of the car being delivered to the White House in 1939.