We hear a lot of preaching and saintly talks about having to go green, in order to make earth livable a little longer than otherwise what it would be.
And yeah plenty of folks are seriously concerned about it and are doing a very good job.
And guess who is going green now??? And it is almost a win-win situation for both the environment and the user of the service who turns green.
The user of the service gets to save 5 Euros for a 45 minutes usage of service.