See for example: http://www.eia.gov/tools/faqs/faq.cfm?id=74&t=11 and let's assume that we are generating our energy according to 2012 rates http://www.eia.gov/electricity/monthly/epm_table_grapher.cfm?t=epmt_1_1 so that average CO2 production per kwh is 1.20.
Let's compare the 2013 RAV4 http://www.fueleconomy.gov/feg/Find.do?action=sbs&id=33397 which gets 44 kwh per 100 miles (the worst I could find that has a gas equivalent). Compare that to the RAV4 2WD http://www.fueleconomy.gov/feg/Find.do?action=sbs&id=33425 which gets 26 MPG.
1 mile on the gas-powered RAV4 produces
1 mile on the electric RAV4 produces
(I used to do the same calculations on coal alone, but it appears that either coal has gotten more polluting or gas powered cars have gotten a lot more efficient since I last checked)