Dick Puddlecote reminds us of the insanity behind the disappearance of thousands of Fairway FX4 cabs from London's streets over the past few months. For those who are not afficionados of London cabs, the FX4 is the one with the rear doors hinged at the back, a hugely sensible and convenient arrangement.
The last of the Nissan-engined Fairways came off the production line in 1997, but a few of the older Austin / Rover engined carbodies FX4s were still on the road two years ago, most having done over a million miles, and instantly recognisable from their engine note.
Steel of course emits around 2 tonnes of CO2 for every tonne made, and all those internal plastic trims come from hydrocarbons. So not only are all those massive, ugly, clumsy, heavy Mercedes cabs now on London's streets responsible for mass emissions as new vehicles, thousands of older FX4s will still have half-a-million miles left in them, as exported taxis, (or as private vehicles - 1990s FX4s will cost £1500 - £2000) so the result of the ban is actually, er, a net increase in CO2 emissions.
You won't be astonished to learn that the Euro 3 exhaust emission regulations are responsible.