A driver trying to set a speed record during a racing event at Utah’s famed Bonneville Salt Flats died Sunday after losing control of his vehicle, organizers said. Driver Chris Raschke was treated by medical professionals at the scene, but died from his injuries, according to the Southern California Timing Association, which organizes the popular land-speed racing event known as “Speed Week.” For decades, people have used the flat, glasslike surface at Bonneville Salt Flats, 100 miles (160 kilometers) west of Salt Lake City, to set speed records sometimes topping 400 mph (644 kph).