First we need a proper cockpit view. (maybe take inspirations from star citizen?)
Damn.. I'd take a challenge to play double driver with cockpit locked vision
I got 2 ideas:
How about a game mode "time attack" with track being split to segments each (or half of them) having a certain time limit?
-if you don't make it in time at segment "2b" you're done (your car majestically explodes)
-after a time limit ends certain part of the track "detach" from the rest and you're either sucked into the space void or crushed by water pressure :d
Or perhaps something alongside what I said above about the track detaching, how about making track randomly change its route each lap when the person at 1st place cross the line? it could create unpredictable races :d