Between fits of laughter during lunch on Thursday, my friend tried to explain the new ad that VW plans to air during Sunday’s Superbowl Halftime show. From his description, I wasn’t sure how the ad, of a white man who returns from his vacation with a Jamaican accent and a laid-back-turn-your-frown-upside-down kind of attitude, was supposed to sell Volkswagen cars – but I was curious to see it for myself. I...