Beware of men in white dust coats

One day as I was driving my car, a Mitsubishi Challenger 4x4, I saw a red light blinking on the dash. So I pulled in at the Mitsubishi agent, Dallas Motors on Victoria street to find out whether there is anything wrong. Three men wearing white dust coats worked on my car immediately. I was watching them because one of them had a computer which he plugged into my car and looking at the monitor as he turned the dials. The end result, the idiot light stopped blinking on the dash. I was given an invoice for $75 which I paid and then I went home [happy] with the quick instant service.