You've seen the headlines, in fact the whole world probably has. Everyone has written about it from The Guardian, the NSA-whistleblowing journalistic titan, to Huffington-post, the New York Post scraper.
But as we all know in advertising, those "man on the street" people are always vetted, nay cast, before they play their part in the "spontanious" real life with lots of hidden cameras stunt. Verdens Gang credits advertising guru Kjetil Try with the idea. Try explains that the passengers are cast/screened/hired before to ensure - of course - a good span of different ages, genders and social groups. That explains all the black people. The passengers were asked if they wanted to be in a film for Arbeiderpartiet, and told that they would be picked up in a taxi.