The suit claims FedEx negligently operated its freight trucks, despite previous incidents of vehicles catching fire due to mechanical problems, driver error or improperly loaded cargo.
Some witnesses reported the FedEx truck was on fire before it hit the chartered bus.
The suit also names the estate of the FedEx driver, Timothy Paul Evans, and the bus company, Silverado Stages, as defendants in the case, claiming the bus was not equipped with enough emergency exits for escape.