Irish-speaking leprechaun stars in unusual VW St Patrick's Day ad

In the ad, a man drives along a residential street, only to have his car’s radar system stop the car several times, apparently because of nearby objects.
The man cannot see these at first and drives on, only to be stopped again. He gets out to see what’s up - and sees leprechauns lining the street (too small to see while he’s inside the car, y’see?).