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Another reason for a card reader is that it easily handles the case of a borrowed EV.

It is customary when borrowing someone's ICE car to pay for the gas used by returning the car with as much gas as it had when you borrowed it, or even with a full tank. I'd expect people will want to continue that custom when the car is an EV.

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EVs could potentially handle that scenario even better than how it works with ICE cars. With ICE there’s always the error associated with how much gas was in the car to start as well as how much should you fill up when returning it. (Yes I know it’s customary to always just return a friend’s car filled to 100% regardless of the original tank state).

Nonetheless with an EV you could just hit a button saying “friend has taken possession” or “loaner mode” similar to valet mode. Upon returning the car and disabling that mode the car could present you with an accurate dollar amount of exactly what to pay your friend.

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