ByeBye Diesels

[toseland]

Sort aeroplanes out. One take off from a 747 could fuel a car round the world, twice!

and a fully loaded 747 per passanger has better MPG per person than a brand new ford ecoboost over it's journey.. that's pretty good
worst polluters are by far Local public transport in cities (busses and taxis in london for example)


old commercial vehicles are bad too, 

globally,  Oil tankers and other large supercarrier esque ships are horrific