I realize that this might be a difficult question to accurately answer but... Let's suppose that I drive the Clarity in ev 100% of the time (or as close as is possible yet I never plug in. Let's suppose that while in park, I charge the battery with the HV charge feature. Then while moving I turn hv charge off and just use the battery by staying in ev as much as possible. What would the mpg be? And yes, I realize that it would be ridiculous to do this, and that it will only charge to 58% this way. But I wonder how it would compare to the advertised 42mpg using gas as a propelant???