Actually by your argument, there is a strong upper bound. Therefore, by basic statistics reasoning, the mean is no longer a remotely valid measure of "average" - mode is much better in this case. Therefore average still constitutes most people. If you strictly are defining "average" to be mean, then sure, everyone is an above mean driver, however if you take average to be defined in a way statistically relevant, then it means "the measure of population that encompasses most of the population - the typical value of the population". (hint, if it is the typical value, most people can't be better than typical, it is definitionally impossible). Basically, I'm taking the long way of telling you to stop being disingenuous if you want to make an argument.