Finally, we have created a page for exchanging offers and needs for shared rides. Please add a note if you are looking for a ride to FrOSCon or from FrOSCon back home, or if you can offer a seat in your car. Or perhaps you are looking for someone you can share a train ride with? Don't hesitate and add a note to the wiki page. Offers and needs influence each other.
PS: Unfortunately the page is in German language only at the moment. But it should be more or less self-explanatory. Sorry for that.