I thought I had an argument when I stated what that had to do with my trying to modify my speeding habits. This is where it's helpful to have someone else observe your behavior. She attests that I tend to press on the gas pedal more when I taunt others. At first I resisted to that comment, saying the fluctuations of the speedometer is natural. She rebuttles with the statement that it does not fluctuate up to 5 miles per hour.
People tend to be biased in their self-witnessing efforts.
In our minds, we tend to fudge our own beahaviors rather than fudging the actual behaviors. As we read papers and websites on driving, we tend to always agree on what they are saying. But when it comes to observing our own behaviors, we detest any type of wrong doing.