Filling up a Toyota Camry with gasoline (say 15 gallons) adds about 90 pounds of fuel. A lithium-ion battery with the same energy content would weigh about 5,800 pounds. Clearly electric vehicles will have a difficult time competing with gasoline vehicles no matter how much charging times are reduced or how much better the software gets. It seems that without some breakthrough the sweet spot for battery-electric vehicles is urban driving done after charging overnight at home.