Very interesting analysis on how green hybrid, electric and petrol cars actually are:

“According to data from the Trancik Lab at the Massachusetts Institute of Technology, a Tesla Model S P100D saloon driven in the US midwest produces 226 grammes of carbon dioxide (or equivalent) per kilometre over its lifecycle — a significant reduction to the 385g for a luxury 7-series BMW. But the Mirage emits even less, at just 192g.
The MIT data substantiate a study from the Norwegian University of Science and Technology last year: “Larger electric vehicles can have higher lifecycle greenhouse gas emissions than smaller conventional vehicles.”

Nice graphic: