Here is a bit of history that you might
Hours after Pearl Harbor was bombed on December 7, 1941, the Secret
Service found themselves in a bind. President Franklin D. Roosevelt was
to give his Day of Infamy speech to Congress the next day, and although
the trip from the White House to Capitol Hill was short, agents weren't
sure how to transport him safely.
The White House did already have a specially built limousine for the
president that he regularly used, it wasn’t bulletproof, and the Secret
Service realized this could be a major problem now that the country was
at war. FDR’s speech was to take place at noon December 8th, and time
was running out. They had to procure an armored car, and fast.
At the time, Federal Law prohibited buying any cars that cost more
than $750 ($10,455 in today’s dollars), so they would have to get
clearance from Congress to do that, and nobody had time for that. One
Secret Service agent was a quick thinker. The federal government did
already have in its possession a car that just might fit the bill: Al
Capone’s, which had been sitting in a Treasury Department parking lot
ever since it had been seized from the infamous mobster during the IRS’
tax evasion suit years earlier.
Al Capone's 1928 Cadillac V-8 Town Sedan became the President's Limo