I’m right there with ya BOF! I’m the youngest of nine and by the time I started grade school my parents and older siblings were asking me what year, brand, and models of cars we would see on the roads in our small town. We made a game of it and my 4 older brothers would occasionally try and stump me but they rarely succeeded. I remember telling an older neighbor that you could look at the tail light lens on most cars and the year model was molded into the lens. I walked over to his car and showed him the tiny numbers on the lens and he chuckled and said well I never knew that! His car was a 59 Chevy btw!