On that analysis the mass transit is waaaay more efficient than the car! (rajman)

Of course, you are being sarcastic, but your analysis is as correct and flawed as the article. It's Finance 201; the answer is correct, given the assumptions. Are the assumptions correct? Nobody knows for sure. It seems safe to say that in this case they ignored many critical inputs and outcomes to get the answer they wanted, rather than searching for the truth.

(better than riding a bike, b/c huffing several hundred calories is going to generate CO2).

I didn't know I was such a polluter. Dang...