Two new Air Force One airplanes are at least three years away from being delivered to President Donald Trump, prompting him to request Elon Musk's assistance.

The comments were the White House's latest attempt to ratchet up pressure on Boeing, which is at least three years behind in delivering two new jets.

President Donald Trump says he is considering buying used Boeing aircraft — perhaps from an overseas seller — to use as Air Force One when he’s aboard, as he fumes over the U.S. plane-maker’s delays in producing two specially modified ones for presidential use.