When attending official events, the President travels by limousine. You might think one limousine is like another, but that's not the case when it comes to the President. Like Air Force One, the Presidential limousine is built specifically to serve the purpose it was designed for.
That means every time you see the President in a limousine - even when he's thousands of miles away - it's the same limousine. It goes wherever he goes, landing ahead of Air Force One on a C-141 Starlifter.