I'm reminded of that banking interest scam where transactions involving fractions of a cent, such as interest, are deliberately rounded incorrectly and the difference deposited into someone else's account (see: Office Space). It looks like the EV owner's defenders would excuse such a scam because the individual transactions are too small. The defenders need to answer some questions, such as-- "How many such transactions would be impermissible?", "If you can identify such a number, why is that number not arbitrary?", and "Would it be okay if me and a thousand commuters passing near your home per day charge our vehicles to your outlet?"