R.C. PRO-AM is a cute little kart racer that is deceptively difficult. Sure, it looks like it's a game for kids, but unless you memorize the maps and master the controls you won't make it very far. Oil slicks, water puddles, and various other obstacles await your little R.C. car on the tracks so it'll take everything you got to make it through in one piece. The game also features a vehicle upgrade feature, something we take for granted nowadays but was rare back in the day.
R.C. PRO-AM was the game you played because Super Mario Kart wouldn't be released for another 5 years. The game surprisingly plays just as well as it used to, so seeing this game released on the NES Classic Edition would have been a blessing.