My girlfriend has started to attend to driving school, yesterday she had her second ride. She was driving through countryside, when she saw two tachometers (as she said it), one right in front of her and the other a bit to the right. The first one was showing 30.
"Am I going at 30 Kmph?" she asked her instructor in scared voice.
"No, you are going at 80 Kmph, those are engine revs." was his answer.

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