A wonderfully thought-stimulating piece, David. But I would advise against the bumper sticker. Unless it is in a more light-hearted meme. Like "vintage driver. Be patient, you'll be where I am now in no time.", for example. The "old" plays into and supports the stereotype that we witness as ageism. The impatient guy behind you will probably just curse that if you are too old to drive properly, you should give up driving altogether. Better try nudging his thoughts, in a more funny way, into realizing that ageism is the most stupid discrimination of them all, the discrimination against one's future self.