To well informed people this is hardly news. I commented on here last year how buses get away with murder in the pollution argument, the driver of a 1.2litre Fiesta doing 10 miles a day gets the punishment while the stoneage diesel buses clogg up and down the place all day (usually with nobody on them) pouring out gases like theres no tomorrow.

The writer of the article has a point, it is politically uncomfortable to actually acknowledge public transport is a big offender (particularly if you look at it proportionately). Its always been easy to blame it on the motorist but hopefully the tide is turning. I wont hold my breath though.