The Florida Highway Patrol says a man was killed in a three-car collision on Interstate 10 westbound near mile marker 53. It happened around 2:00 p.m. yesterday near the Crestview exit. Troopers say a man driving a truck collided with another car. The driver of the truck was Life Flighted to Fort Walton Beach Medical Center where he was pronounced dead. No names have been released. The investigation is continuing.