President Donald Trump speaks during a news conference with Elon Musk on May 30 inside the Oval Office. (Tom Brenner/For The Washington Post) By Natalie Allison and Kara Voght

“Boooooooooooo CYBERTRUCK!”

Raheem Kassam stood on a sidewalk in the Capitol Hill stretch of Pennsylvania Avenue in Washington, pulling a Hestia cigarette from a pack and preparing to light it. He had spotted the truck, a heap of matte silver and sharp angles, parked on the street nearby. Subscribe for unlimited access to The Post You can cancel anytime. Subscribe

It was the uninvited guest to an unofficial party celebrating what the MAGA faithful here view as the end of Elon Musk’s influence in President Donald Trump’s Washington.

The festive mood Thursday night came after an hours-long public feud betwe

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