[viraptor]

General car mechanics probably not. I don't think they spend that much time next to running (and not just idling) engines. But I like that train of thought... how about professional drivers - truck, bus, taxi?

[mymythisisthis]

Truckers die early http://www.truckinginfo.com/article/story/2012/07/fmcsa-answ...

[Reason077]

Idling engines still produce plenty of toxic emissions - diesels especially.