A recyclable truck driver for Waste Management was forced to ditch a load of cardboard after it caught fire inside the truck Wednesday. The dramatic video was taken in a gravel lot at Kenworth Sales. According to Waste Management, the truck driver was collecting cardboard in the Spokane Valley area when he noticed a fire in the rear of his truck. The driver did exactly as he was trained – he pulled over, dumped his load, and worked with professionals to put out the fire. An internal investigation at Waste Management determined that flammable materials placed in the recycling caused the fire.