According to KCAL 9, it took hours for the on-duty gas station attendant to notice the glitch (didn't the line-up of cars give it away?). In the meantime, police arrived on the scene to direct traffic around the overcrowded station.
When station owner Kenny Nguyen got wind of his unintended act of kindness, he immediately shut down all of the pumps. All told, Nguyen estimates that he lost nearly $21,000 due to the glitch. Ouch.
[Source: CBS Los Angeles, Green Car Reports, Consumerist | Image: taberandrew – C.C. License 2.0]