Reducing 1.2 tonnes of CO₂ on the EU emissions trading system costs £5; but instead, the UK Government subsidises each car with £4,500. All of the world’s electric cars sold so far have soaked up £9 billion in subsidies, yet will only save 3.3 million tonnes of CO₂. This will reduce world temperatures by 0.00001°C in 2100 – the equivalent of postponing global warming by about 30 minutes at the end of the century. Electric cars will be a good idea, once they can compete – which will probably be by 2032. But it is daft to waste billions of...