A little bit of history
On the day of the attack on Pearl Harbor, the Secret Service realized they did not have a bulletproof car to transport President Roosevelt safely to Congress to deliver his Infamy Speech.
There was one slight problem. US government rules at the time restricted the purchase of any vehicle that cost more than $750 ($10,455 in today’s dollars). It was pretty obvious that they weren’t going to get an armored car that cheap, and certainly not in less than a day. A quick thinking Secret Service agent realized that the U.S. Treasury had seized the bulletproof limo of Al Capone in 1931.
The car was still in working condition and safely transported the president to Congress. President Roosevelt reportedly quipped, “I hope Mr. Capone won’t mind.”