Troy Critchley, a Queensland drag racer, has been charged with six counts of vehicular homicide in Tennessee. Six people were killed and 22 were injured when Critchley’s car ploughed into a crowd of spectators at a charity drag racing event. The racer was performing a “burnout routine” in June of 2007 when he lost control of his car and crashed. Race car builder Bobby Umstead testified as an automotive expert witness for Critchley and said that revving the motor did not affect the speed of Critchley’s dragster.
An internationally-recognized expert in crash reconstruction and mechanical inspections was hired to conduct a comprehensive vehicle autopsy of the race car, with the evidence turned over to District Attorney General Mike Dunavant.