Tow Truck guy - spoilers
I'm thinking the tow truck guy was already dead when he picked up Emily Blunt, since he swerved to avoid "her" and the guy when they got in the accident earlier. I think his death was a re-enactment of his "actual" death at the hands of the ghost cop. I wonder if all of the ghost cop's victims walk the earth on the anniversary of his death, maybe not realizing they aren't alive anymore. Kind of odd, though - you'd think it would be the anniversary of their own death.
They're coming to get you, Barbara!