Supercar Pileup = Free Advertising
The Ferrari pileup in Japan is isn't the first example of a luxury car demolition derby. The total damage is estimated at around ~$4million.
Call me suspicious but given that the cost of a Superbowl add is ~$3million, hiring a few stunt drivers and letting them crash on the highway would create an economic benefit (as long as all the drivers survive).
When I drive my Ferrari on the highway... OK... IF I was driving a Ferrari that I miraculously owned, I don't think I'd set myself up to pile into someone from behind.