Tesla famously offers its superchargers for free. Being the owner of a car, it is possible to enjoy for no extra cost the network of fast chargers installed in North America, Europe and Asia.
This is not a sustainable business model for everybody, however. At some point, it is important to monetize the charging of electric vehicles.
be.Energised proposes a business model; scanning a QR code, the user of the charging point can pay for the electricity consumed. The question is, how would it work with Vehicle 2 Grid? It would be interesting to connect your car for few hours and to find back more money than you had.