Howdy Gus. Looking forward to what folks answer to your question. It is a hotly debated subject and folks have strong opinions.
Ya got me wondering and I googled it but hard to decipher sales pitches from facts.
Found this post interesting; http://www.mainspot.net/are-electric...-powered-cars/
Gotta read down some but many of the folks posted similar #'s and %'s
But if some one on the street did give ya guff about an ICE (Internal Combustion Engine) I would just say the mileage or ask if they own a car