Trump set for starring role at Washington's debut IndyCar race‎

US President Donald Trump is set to take a ceremonial lap in his armored limousine and wave the green flag to launch Sunday's IndyCar race through the streets of Washington, capping celebrations of America's 250th birthday.Trump, 80, is expected to take a lap of the course in his armored limousine known as "The Beast" and wave the green flag at the start-finish line in front of the US Capitol building, with military flyovers before the start of the 250-mile event.