To beat a Prius you have to get down tto 250 Wh per mile.
All the other measures are deceitful - $ per mile, MPGe, etc.
0.61 kg CO2/kWh (unleaded regular gas against utility electrons.)
(IPCC because the DOE does not make it clear -
and 8.572 kg of CO2/gal. of E10 (US EIA 2018)