On February 8th, 2008, on the N3 in Durban (which is, I think, in South Africa) A truck had a blow-out, which caused it to slide in the wet conditions, colliding into a guardrail and overturning. The news report says that a "bakkie" then collided with the truck.

Apparently, a "bakkie" is slang in South Africa for a small pickup truck. It's also the name of a small bowl to put something in, which would explain the nickname.

Nobody was hurt, but cleanup crews cried for hours. Just kidding. It's an onion joke.