SubMate - TNW Startup Rally

URL: submate.com
What they do:
Meet people on your regular commute.
You sign up to the service with information about your regular commute, and then SubMate proposes friends, events etc.
Comment: Only works in Paris. Seems like the service needs a LOT of users in order for it to work. But the concept is also a bit strange. Most commuters just want to get from A to B – they don’t want to interact with other people, go to concerts or a bunch of other events…