Billionaire Elon Musk said Friday he would remain a „friend and advisor“ to Donald Trump, as the US president hosted an Oval Office farewell for the man who led his turbulent cost-cutting drive. „I look forward to continuing to be a friend and advisor to the president,“ Musk told reporters after Trump handed a golden key as a gift to the departing leader of the so-called Department of Government Efficiency (DOGE). SOUNDBITE