This has got to be one of the most brilliant viral marketing campaigns that I have ever seen. Created by Sweden's airport bus service "flygbussarna," the campaign goal was to point that Co2 emissions from 50 cars with an average of 1.2 riders each far exceeded one bus capable of carrying 50 people.
The campaign constructed a bus out of 50 junked cars placed in the form of a bus and located along the freeway to the airport. The campaign createrd enormous buzz and attracted the attention of numerous media and social medias.