The new Passat EcoFuel is powered by biogas and emits just 20g CO2 per km. We illustrated just how little this is by comparing it to human emissions, which is about 0.05g per breath.
An online application called the jazz calculator was created, where users could compare the emissions of a Passat EcoFuel to that of an average sized jazz band.
Visitors to the site selected a route between two cities in Sweden to begin the calculation. The result of the comparison was presented in the equivalent time that a jazz band would emit the same amount of CO2, as emitted by a Passat EcoFuel in the selected route.
A playlist of jazz music corresponding to the distance of the route was generated, that the visitor could add directly to the streaming music service known as Spotify. If the visitor would not be Spotify-member, Volkswagen gave away an invitation.