But urea injection was first developed in the EU - low sulfur/sulphur diesel fuel as well.  

That Business Week article is so full of holes, it's swiss cheese.  First off, it isn't NO2 specifically that is the problem, but a variety of nitrogen oxides, and the way anybody in science rights that is NOx.  Then there's the bafflegab about different NOx standards for diesel powered cars - which isn't so, EU standards for car emissions are fuel-neutral.  And, having travelled in London, it's not the diesel cars that are the problem, it's the trucks/lorries.

Overall, I'd have to say another 'puff piece' by Business Week for the North American gasoline industry!  

James
Ottawa, ON

> Date: Fri, 20 Jun 2014 10:41:01 -0700
> From: stuartmacm@GMAIL.COM
> Subject: Friday NVC:  European Union switch to diesel not working so well
> To: vanagon@GERRY.VANAGON.COM
> 
> The EU didn't think this through and simply switched pollutants from CO2 to
> NOx and particulates:
> http://www.businessweek.com/articles/2014-06-05/london-leads-eu-in-car-pollu
> tion-diesel-fuel-blamed  It's going to take a long time to replace their
> diesel fleet with clean diesel vehicles.
> 
> 
> 
> In the US since 2007 we've been doing better with low sulfur diesel fuel,
> clean engine design, particulate filters and post-treatment like urea
> injection: http://www.epa.gov/otaq/technology/420f04023.pdf  But even with
> this it will take until 2030 to see the full benefits.
> 
> 
> 
> We are much better off having minimum clean air standards and a mix of gas,
> diesel and electric cars we can choose from.
> 
> 
> 
> Just so they don't start going after old cars . . .
> 
> 
> 
> Stuart