It turns out that coal-fired power plants being the primary source of power for electricity generators plants isn't the only environmental concerns for plug-in electric cars. As a story in Automotive News mentions, the disaster in Japan's nuclear power grid has been sending shock waves around the world, especially in Europe. Nuclear power is a primary source for electric plants in Europe -- for example, electric plants in France are dominated by nuclear power. Nuclear power was a big part of the success formula for powering electric cars in Europe'a future.
Plans to have a million EVs on European roads by 2020 heavily relied on nuclear-generated electricity. Nuclear power is necessary for making EVs carbon neutral, proponents have said in Europe, and coal or natural gas as sources for power plants can't provide that neutrality, they say.