Defending that particular kind of driver: He might not have known to be the last car. But one thing he knows for sure: a long line of cars in front of him. Spee

Defending that particular kind of driver: He might not have known to be the last car. But one thing he knows for sure: a long line of cars in front of him. Speeding up or keeping distance is pointless, so he uses that moment to be friendly instead.