There has been a lot of investment in materials, electrochemistry and solid state lithium batteries that will greatly extend capacity and recharge cycles. Other technologies that use aluminum or sodium are being vigorously perused and research breakthroughs are happening daily. These companies aren't wasting money and many problems are at the engineering stage of development and production. The next decade will see major advances in battery technology and the green grid to power with standardized charging points for EVs. Charging rates, costs and range are the two biggest issues in competing with ICE vehicles, particularly in North America and particularly the suburban and rural markets where range is important. Charging such high capacity batteries from home would be an issue though, since they would store large amounts of amp hours for say 600 or 1000 mile range.
EVs are coming, count on it, every car company on the planet is and the research and development is happening at a feverish pace and investment dollars are flowing. A new green and hardened, secure grid will have to be built on the bones of the old one to accommodate the growing energy needs of EVs, wind, solar, tidal, geothermal and natural gas turbines for peak demands (initially). In 20 years an ICE powered private vehicle might be a thing of the past and so will many auto mechanics, some EV designs have the electric motors integrated into the wheel hubs and the wheels are the only moving parts!