PUBLIC MARKS with tag opacité

I don't want to "download high-res images", or watch videos of the application in action accompanied by some random elevator music; I want to play around with myself and explore the data. A good example of how this can be achieved in an interactive and user-enganging fashion is http://zugmonitor.sueddeutsche.de/ , which uses timetable and delay data for the German long-distance railway network. It would have been cool if Trains of Data was as open as well.

A la SNCF, on aime montrer qu'on est capable d'avoir des données sur les trains (bon, après on se demande à quoi elles servent vraiment), mais quand il s'agit de les exposer : biip biiip biip, allô ?