Frankfurt, Nordend-Ost district in late summer. It's Saturday morning. Peter Andreasen has used his smartphone to book an e-car with the sharing provider mobileeee. He is planning a short family outing in the countryside. For this, the passionate cyclist exceptionally needs a car - and the S-Bahn. That's because the mobileeee vehicles are parked at the House of Logistics & Mobility near the airport. Peter Andreasen is happy to accept the detour, as it saves him having to own a car in the city. In the center of the Main metropolis, parking spaces are so scarce that some car owners switch to public transportation just so they don't lose their parking space near their apartment. Quite illogical. The people of Frankfurt are much smarter, saving themselves the hassle of looking for a parking space, but still not having to do without individual mobility. In Frankfurt and other large cities, major car manufacturers have also recognized car sharing as a business segment. Some providers have fixed stations, while others operate free-floating carsharing, i.e., cars are parked in public parking lots and can be returned within the business area.