These days, American presidents travel around the country on Air Force One, but in the 1940's, there was no Air Force One.
Actually, there wasn't even a U.S. Air Force, they were still part of the Army.
Franklin D. Roosevelt was the first sitting U.S. President to fly in an airplane, back in 1943.
But for most of his presidency, he used a very different form of travel.
This is the Ferdinand Magellan, officially known as U.S. Car Number 1.
120 tonnes of armor-plated, bulletproof rail car.
- The rail car is the heaviest U.S. rail car ever built.
They had to build special trucks just to support the extra weight.
The reason it only weighs 285,000 pounds is that was the weight limit for U.S. railroad bridges and trestles at that time.
So, the entire car is not armor-proofed, only where the President is.
