Guardian: Sales of new electric cars in the UK plummeted by nearly 90% in 2009 compared with their peak in 2007, according to motoring trade association figures released this week. Just 55 of the green cars – whose fans include Boris Johnson, Jonathan Ross and Jade Jagger – were registered in 2009, in contrast to 397 in 2007, says the Society of Motor Manufacturers and Traders. The huge fall is a blow to UK efforts to meet tough carbon emission cut targets in a decade, and comes just …