President Donald Trump taunted Elon Musk's new third party as 'ridiculous' and said it would 'never work' as the world's richest man carried out his threat to challenge the political system.

President Donald Trump said he was "saddened to watch Elon Musk go completely 'off the rails'" in recent weeks.

Trump said third political parties "have never succeeded in the United States" because "the system seems not designed for them."

Donald Trump has called Elon Musk a “train wreck” after his former “First Buddy” announced he was launching his own political party. The US president went on a lengthy rant about the world’s richest man and his ex-adviser last night, accusing Musk of going “completely off the rails” over the last five weeks.

In a lengthy Truth Social tirade, Trump said Musk has gone ‘off the rails’ in recent weeks, and repeated his theory that the tech mogul’s problem with the sweeping tax bill signed into law on Friday was its elimination of incentives for electric vehicles.

"I am saddened to watch Elon Musk go completely "off the rails," essentially becoming a TRAIN WRECK over the past five weeks,' Trump wrote on social media.

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Donald Trump has unleashed on former MAGA mate Elon Musk, accusing him of being a “train wreck” and “off the rails” in a searing Truth Social post. The latest spat between the president and the richest man in the world has flared up after Musk promised to start his new “America Party”.

Unhappy with his former ally’s plans, President Trump slammed Elon Musk as a “train wreck” as the billionaire plans to create a new political party in the U.S. “I am saddened to watch Elon Musk go completely ‘off the rails,

President Donald Trump dismissed Sunday Elon Musk’s launch of a new political party as 'ridiculous,' escalating a feud with the billionaire who was