If your concern is trackability, then I'm pretty sure you can buy pre-loaded credit cards that are as anonymous as cash.

If you are concerned about convenience, it sure seems to me that swiping a card is easier than buying gas with cash is.

-edit- Oh you mean the Tesla thing. That's a nah from me dawg. I don't mind having the option, but having that as the _only_ method of payment is _incredibly_ anti-user.