Plug-to-wheel MPGe (the number on the EPA sticker) will be the same no matter where you get your electricity because all it does is measure energy usage from the plug (upstream from powerplant is ignored):
95MPGe for 60kWh and 89MPGe for 85kWh.
http://www.fueleconomy.gov/feg/Find.do?action=sbs&id=33367&id=33368
However, if you click on the "Energy and Environment" tab and then under the "Greenhouse Gas Emissions" section select "Show: Tailpipe and upstream GHG" you can get the CO2 emissions (in grams per mile) including upstream emissions from the powerplant. The conversion factor is 11.1 kg CO2/gallon gasoline (from the Prius getting 50mpg and 222g/mi when including upstream). You get the following results.
60kWh:
230 g/mi (US Average) = 48mpg gasoline car
120 g/mi (downtown SF) = 93mpg gasoline car
85kWh:
250 g/mi (US Average) = 44mpg gasoline car
130 g/mi (downtown SF) = 85mpg gasoline car