Hagerty Motorsports has compiled a list of the top 20 race cheating incidents. All of them were very clever, although illegal. https://imola.motorsportreg.com/top-20-racing-cheats-if-you-aint-cheatin-you-aint-tryin/
I think there were a whole lot more cheating back in today and still today......lol I could tell some stories back when I was younger racing go carts back in the day. just stretching the rules a little bit.....