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The Fisker Karma is finally going out for deliveries this month (if you see one, chances are good it's Leo's) and this means that some of the technology that the fledgling automaker uses in the luxury plug-in hybrid can now be talked about. This is the case with Clean Diesel Technologies, which has been working with Fisker for over a year to put its patented mixed phase catalyst into the car's powertrain.

2011 Honda CR-Z vs. 2010 Volkswagen Jetta TDI Street Cup Edition – Click above for high-res image gallery

2010 Volkswagen Jetta TDI Cup Edition – Click above for high-res image gallery

Audi A4 TDI – Click above for a high-res image gallery

In the past, the Environmental Protection Agency (EPA) typically issued grants for the advancement of proven technologies and rarely offered up government money on projects that some would consider experimental. As environmental concerns rose in recent years, the EPA created its emerging technologies program to fund unproven, cutting-edge advancements that offer the promise of reduced emissions and improved air quality. The program kicked off in 2008 with an aim to offer assistance to companies

Thomas Built Buses, the school bus manufacturing unit of Daimler Trucks North America, has just received its first order for new clean diesel buses. Montgomery County in Maryland has ordered 59 new Saf-T-Liner HDX school buses equipped with selective catalytic reduction (SCR) systems. The SCR system eliminates most nitrogen oxide emissions and allow the buses to meet the 2010 emissions standards for heavier trucks.