Last week, a one-off story raised my eyebrow. It was about Hertz car rental charging a customer nearly $300 for not filling up a Tesla—a car that runs on electricity, not gas! Since that report, other customers came forward to share their similar experiences of being overcharged. In one case, a guy was billed a whopping $690 in extra fees for gasoline in the 100% electric vehicle. Hertz apologized and blamed it on a system error, but only after these stories made waves. Not everyone is fully convinced this was an honest mistake, and that leaves Hertz in a world of hurt.

Even though it is obvious that Teslas do not use gasoline, the customer had difficulty convincing Hertz customer service reps to reverse the charge. the company finally…