Electric cars will be necessary when oil becomes scarce. Electricity to drive them can come from fossil fuel plants or from carbon-free sources like fission or fusion reactors. Even if fossil fuels are used, GHG emissions are greatly reduced if the fuels are burned at a central utility rather than in vehicles. The main problem is the lack of a suitable battery. Recognizing this urgent need, the Obama administration in the USA has allocated $1.5 billion to the development of advanced batteries. This will greatly expedite this field of research, which was previously hampered by the lack of funding.