Just because it got a battery, it doesn't mean it actually solves the issue "getting around without taking forever and wasting resources" well. In the long run, it would be better to reduce commutes. And that's something we can do with some policies, on paper. No need to invent human slingshots or anything.
German Freenet Funk offers one-day-one-euro prepaid SIM; you can cancel any day.
Satellite.me gives you a German mobile number through an app for free (SMS support is in alpha, though).