mark, why do you portray yourself as a smart person when you always reveal yourself to fall for bullshit without ever even fact checking?
Tesla Motors implies that the Model S sedan effectively emits 176g of CO2 per mile driven, although we believe the power consumption estimate Tesla uses for these calculations ? 300 miles per 85 kWh consumed ? is unrealistic. Furthermore, unlike gasoline-powered vehicles, electric vehicles utilizing lithium-based batteries suffer charging inefficiencies of roughly 10% to 20% and often consume meaningful amounts of energy when they sit idle ? especially in cold weather.
If we incorporate charging and idle losses, using data provided by Model S owners, we calculate that the effective CO2 emissions of an average Model S are roughly 394 g per mile.
It gets worse: Other research shows the massive amounts of energy needed to create an 85 kWh lithium-ion battery results in effective CO2 emissions of 153g per mile over the life of a Model S battery, based on our assumptions.
When the CO2 emitted during the production of the battery pack are incorporated, we believe the total effective CO2 emissions of an 85 kWh Model S sedan are 547g per mile ? considerably more than a large SUV, such as a Jeep Grand Cherokee, which emits 443g per mile!

keep saving up for your performance car.