Three letter acronyms abound in this story where Transport for London (TFL) have decreed that more environmentally friendly cars running on liquefied petroleum gas (LPG) are due to lose their 100% Alternative Fuel Discount (AFD) by 2010. This is a knock-on from the £25 congestion charge scheme for gas guzzlers and in an unpleasant twist of unfortunate injustice, a minority of motorists will find themselves not only losing their AFD but subsequently falling into......