As cars get greener, there's more controversy surrounding how we judge exactly how green they are. That tops the headlines this week in social media here at Green Car Reports, as Ford announced revised gas mileage stats for its 2013 C-Max Hybrid and promised to do better for 2014.

In other news, Tesla wants to dump sideview mirrors in favor of more aerodynamic video cameras. Could it be the first automaker to accomplish such a feat on a mainstream vehicle?

HUMMERs, Ford Excursions, Cadillac Escalades, Italian supercars, and gross polluters. What do these five vehicles have in common? They all make green-car drivers see red, and we showed you why.

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