Well, if you care about the green house impact of his use of his car, it's pretty good. Driving a regular car 12k miles will net you about 4.6 tons of CO2. Hi

Well, if you care about the green house impact of his use of his car, it's pretty good. Driving a regular car 12k miles will net you about 4.6 tons of CO2. His 36 gallons of gas, plus his electricity consumption if we assume that he uses about 36 kwh/100 miles and that he lives in New Jersey (as per http://media.gm.com/media/intl/en/chevrolet/news.detail.html/content/Pages/news/intl/en/2010/CHEVROLET/12_15_airline_pilot_takes_chevrolet_volt.html http://media.gm.com/media/intl/en/chevrolet/news.detail.html...), which does not just burn coal for electricity production, we can expect him to have emanated ~1/3 ton of CO2 with his Chevy Volt over that period. So a good 15 times better.