There's an article on Spiegel Online about the future of diesel passenger cars in relation to new emission standards.
http://www.spiegel.de/spiegel/0,1518,283740,00.html
"Der Spiegel" magazine is, of course, not exactly known for its expertise in the field, but it is generally quite objective.
It would be a shame if that actually happens - I can already picture myself sitting in a small-engine gasoline car (1.4L, 120 horsepower, requiring premium gasoline) and explaining torque to my children...