OT is made when people actually play a game. Nearly all of the people here take barely any interest in 'making OTs of games'. Most of the time when i play a game which no one has played, then i also find the absence of an OT quite disturbing. But usually i go ahead and make it myself, like i did with Alien Rage, Kill is Dead, Murdered Soul Suspect and SO MANY other games.
Once i am done downloading and installing GRID:Autosports, i'll definitely make a thread here. But for now, if you are willing to make one, then go ahead. But make sure you know How to make an OT.
As for its "simulation capabilities", Codemasters is not really known for that (apart from their F1 franchise). Other GRID and DiRT games also never portrayed such capabilities, so i am not sure if those are to be believed. Still, i'll definitely post my detailed impressions once i have it in my PC.