Mary Barra, chair and chief executive officer of General Motors Co., during a news conference at the Hudson’s building in Detroit, Michigan, US, on Monday, April 15, 2024.  Jeff Kowalsky | Bloomberg | Getty Images DETROIT — General Motors is proving it’s a standout among automakers this year as it continues to consistently outperform Wall Street’s earnings expectations and its competitors. Shares of the Detroit automaker have risen 54.7% ahead