Suggested

Add Commentary.

Ok hear me out, what if there's a way to add Commentary to the game? Wouldn't that be fun. It doesn't have to be much it can be as simple as text to speech reading out what's above the screen. The little bar that shows when someone puts and gets overtaken. Play something like Vendetta Online. (Highly recommended you play that game by the way) there is a simple text to speech when you take a mission it reads out your missions and so fort. Obviously make it so it's not as annoying so tweak it a little and make sure it's somewhat reliable Make it so its worth while having it as it oppose to not having it make the races much more fun and it'll make 1× 100% racing more fun. Strategically it's a benefit too as you don't have to micro everyone else as much. And it could improve spectators too us it's not as quiet. By the way I thought about this when spectating a race while testing out my recording as I want to make content for IGP Manager.

That's the thing you wouldn't need to have a voice actor to do so. You could just use a voice software like Cortana or Siri. Surely you'd be able to somehow implement the text to speech into the game.