Arnold had been receiving treatment from the intensive care at SSM Health St. Louis University Hospital. He suffered from multiple injuries, including broken vertebrae, femur, elbow and ribs and a punctured lung.
Arnold and another man were hit by a stolen Ford F-150 truck during a robbery attempt along Chestnut Street. The men had witnessed the carjacking and were intentionally struck by the driver of the stolen vehicle.
Curtis Alford, 20, was charged June 17 with 10 felonies, including robbery, armed criminal action and various counts of assault. Jana Stowers, 18, also was charged with armed criminal action and robbery.
Arnold was an employee of AAA-Auto Club of Missouri for over 30 years and drove the party bus for winery trips and other events on the weekends. Arnold and his wife, Suzanne, bought the bus in 2010 after blending their families. The couple has eight children ranging in age from 17 to 30.
Troika Brodsky, a friend of Arnold, created a GoFundMe account to help raise funds for the family. As of June 22, the account had raised over $21,200.
Funeral arrangements are pending.