A 56-year-old man from the Ashburn area died Tuesday after his vehicle struck the sound barrier on the Fairfax County Parkway near Franklin Farms Road.
Fairfax County Police from the Fair Oaks District responded to the crash at around 12:56 p.m. Tuesday.
Robert Bittner was driving southbound on Fairfax County Parkway and for unknown reasons, his 1999 Toyota Camry left the roadway just past Franklin Farms Road and struck the sound barrier, police said. After passersby had pulled the driver from the vehicle, the vehicle caught on fire. The driver was transported to a nearby hospital where he died.
Speed and alcohol are not considered factors in the crash and an investigation is ongoing, police said in a statement.