How can we get people to be more active? How do you get people to not litter? What can you do to make people recycle? All of these require changes in behaviour, and Volkswagen is spearheading this effort with what they call the Fun Theory, which is dedicated to the thought that something as simple as fun is the easiest way to change people’s behaviour for the better. If you haven’t yet seen this video, take a look… All of a sudden, people feel like taking the stairs. And how?