Reuters: The drivers of nine million cars, nearly half of all those in Britain, will be worse off under government plans to raise vehicle duty for polluting cars, according to figures from the Treasury. The Conservatives said the news contradicted Prime Minister Gordon Brown’s comment in parliament that the majority of motorists would benefit from the changes. Currently, cars bought after March 2001 and registered before March 2006 are liable for a maximum of 210 pounds in car …