Tesla shares are down 2-percent after a report that a Model S crashed with autopilot engaged.br According to the US National Transportation Safety Board, the crash is under investigation.br The collision occurred near Los Angeles, and involved a fire truck.br A report from Bloomberg indicated the Model S struck the fire truck while traveling at 65-miles-per-hour.br According to the driver, autopilot was engaged.br No injuries have been reported due to the crash.