Ads promoting road safety have a tendency not to pull punches - and this latest warning from Volkswagon is no different.

It opens on a cinema in Hong Kong full of people ready to enjoy a movie. But as the lights dim, they are shown a first-person view of a drive down a country road.

After a few seconds, each viewer is sent a text. As they reach for their phones, the action on the screen takes a terrifying turn - delivering a message that's likely to stay with them long after they leave the theatre.