My daily commute is 48.6 miles, at about 30 miles/gallon. 1.62 gallons per day, which when combining the energy content of the gas (38.685 kwhr/gal) and the refining energy cost (4 kwhr/gal) is a daily vehicle energy usage of 69.15 kilowatt-hours, plus whatever I use getting lunch. The greenhouse effect of my gaming rig is next to irrelevant.