This paper explores recent trends in the market penetration of plug-in electric vehicles (PEVs) in selected countries around the world, and the implications of this for a potential transition to a fairly dominant PEV market presence within the next 15 years. A useful context is provided by the Paris Declaration on Electro-mobility (UNFCCC, 2015), which calls for 400 million PEVs on the world’s roads by 2030, of which at least 100 million are expected to be passenger light-duty vehicles (automobiles, sport utility vehicles/SUVs, vans and passenger light trucks).