today

There are 6 hybrids already on route 360. A new hybrid double-decker on the 141 route has just been introduced. This hybrid has a 1.9 litre Euro 4 engine (about the same capacity as the engine in a smallish Mumbai car) whereas previous buses of similar performance had a large 7 litre diesel engine. There are no magic tricks, just a slightly better design and a resulting 77% reduction in carbon emissions and cleaner air. Passangers probably won't even notice the changes.

IMO: Thank you Mayor Livingstone. It is only a small contribution but a valuable one, to saving the human race and we should be truly grateful. Others can see that these is little pain and can follow suit.