WOODY CREEK, Colo. (AP) — Jim Crown, an executive and philanthropist who recently announced an effort to rally other business leaders to help fight violent crime in Chicago, died Sunday in a car crash on a racing track in Colorado. He was 70. Crown, a grandson of industrialist Henry Crown and the chief executive of Henry Crown & Co., was involved in a single-vehicle accident at the Aspen Motorsports Park in Woody Creek, the Pitkin County coroner’s office said in a news release. “The official cause of death is pending autopsy, although multiple blunt force trauma is evident,” said the coroner’s office, which classified the death as accidental. Crown’s father, financier Lester Crown, said his son “was driving a race car, and it hit a wall going around a curve,” the Chicago Sun-Times reported. “There never was a finer human being in every way,” Lester Crown said.