xcarroll writes: "The UK government is to subsidise the purchase of electric cars. Presumably this is intended as a plan to save the planet rather than say, boost the revenue of electric car manufacturers. I'm still trying to understand how electric cars are an improvement. Electricity has to come from somewhere and mostly that means from fossil fuel power stations. Are power stations notably more efficient that internal combustion engines? What about the energy loss in sending electricity over hundreds of miles of power cables? If electric cars are more expensive to buy that's probably a sign that the energy cost of building them is higher. I think I need a car analogy to help me understand this."