The calculations in Sweden (where the author/s are) are entirely different. The Tesla isn't a luxury item there, and you can't drive a small cheap car for equivalent price, since the taxes and gasoline costs are so high.
The Tesla is definitely a luxury item here in Sweden. I drive a Renault diesel and I could buy three of those for the price of a Tesla (yeah, I know, apples/oranges...) TCO for a Tesla will (sadly) be a lot higher than for a fossil fuel car, simply because of the high purchase price.
