Today on Green Car Reports: Chinese vehicle sales soar past 20 million with smog worse than ever, Peugeot-Citroën sells its 50,000th diesel-hybrid car in Europe, and a Tesla Model X prototype is spotted on public roads in California. All this and more on Green Car Reports.

A 2015 Tesla Model X prototype posted to Instagram while testing on Southern California roads. Could Tesla be prepping it for next week's Detroit Auto Show?

Chinese vehicle sales soar past 20 million, and the smog is worse than ever.

PSA--the company that owns the Peugeot and Citroën brands--sells its 50,000th diesel-hybrid car in Europe.

Electric-car trivia: When was regenerative braking first used?

We've updated our 2014 Detroit Auto Show green-car preview.

Ford's Jim Farley apologizes for saying "We know what you're doing." Nice to know car companies aren't using GPS to spy on customers after all.

Finally, you'll save plenty of gas if you drive this 1960s Lotus racing simulator, now up for sale.


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