Flames engulfed a vehicle on Interstate 8 in the rural southeastern reaches of the San Diego area Monday and spread into adjacent brushy terrain, where it soon blackened hundreds of acres and prompted widespread evacuations. The blaze erupted about 3:30 p.m. on the westbound side of the freeway, near McCain Valley Road in Jacumba, according to Cal Fire. Over the next several hours, the blaze charred an estimated 903 open acres as firefighters battled the flames on the ground and aboard air tankers and water-dropping helicopters, the state agency reported. MORE: https://www.cbs8.com/article/news/local/wildfire/fire-crews-battle-brush-fire-boulevard/509-9dbba17b-8ded-4908-9031-885f282daadb