They are going on about diesel, well funnily enough diesel buses do not run the engine in the best way so the exhausts get all black and full of soot. When the bus is going for its test they take off the exhaust, put a new one on, then when it comes back from being tested they take off the new exhaust and put the old one back! However what is the date for all London buses to be trolley buses. All of the diesel buses will not pass the centre of London regulation! 1 Bus will make loads more fumes than a small car or motor bike, yet the small car pays no tax, the small bike pays more than a lot of cars, and buses, the biggest polluter, nothing.
When are the buses going to have to be trolley buses?