Millions of motorists could be driving illegal vehicles.German manufacturer Volkswagen has admitted to rigging pollution tests and is facing fines of $18 billion.The car giant admitted to installing software in VW and Audi diesel engines that would give false readings when exhaust fumes were tested.The US Environmental Protection Agency (EPA) has said it is investigating other car firms. In the UK the number of diesel cars has risen from 1.6 million to 12 million in the last 20 years.The...
