Today modern, exhaust gas treated engines exhibit almost zero emissions locally. Action is needed exclusively with regard to the conservation of fossil resources and reducing CO2, both of which are closely related. For a technology-neutral approach, starting with renewable primary energies, the diverse conversion, storage, energy distribution and refueling concepts must be examined in particular with regard to their availability or investment requirements. The Power-to-Liquids approach, i.e. the use of renewable liquid fuels (so-called “e-fuels”), reveals enormous potential, which should be raised in parallel with the electro-mobility that is politically propagated as a “magic bullet”.