Nitrogen oxide is the new smoking: http://www.telegraph.co.uk/motoring/news/10862975/Emission-tests-substantially-underestimate-pollution-pumped-out-by-diesels.

Nitrogen oxide is the new smoking: http://www.telegraph.co.uk/motoring/news/10862975/Emission-tests-substantially-underestimate-pollution-pumped-out-by-diesels.html http://www.telegraph.co.uk/motoring/news/10862975/Emission-t... (Article is from last year - it's just something I found on google just now - but representative.)