(FILES) US President-elect Donald Trump looks on as SpaceX and Tesla CEO Elon Musk speaks at a MAGA victory rally at Capital One Arena in Washington, DC, on January 19, 2025, one day ahead of his inauguration ceremony. Tech titan Elon Musk cast doubt on January 22, 2025 on a $500 billion AI project announced by US President Donald Trump, saying the money promised for the investment actually wasn't there. The comments marked a rare instance of a split between the world's richest man and Trump, with Musk playing a key role in the newly installed administration after spending $270 million on the election campaign. In his first full day in the White House, Trump on Tuesday announced a major investment to build infrastructure for artificial intelligence led by Japanese giant SoftBank and ChatGPT-maker OpenAI. (Photo by Jim WATSON / AFP) (Photo by JIM WATSON/AFP via Getty Images)