I wonder if it will be Caterham or Ariel Atom. I think in all reality they can't have 2 cars in the same class because if one car has a slight performance increase over the other, that will be the main car that everyone will race with the current system. Right now we have LMP2, GT1, GT2, the soon to be GT3 Mclaren, Riley DP, Radical, the soon to be Caddy (where ever that fits), Ford V8 supercar, the RS500 (where ever that fits), and the street tuner cars (MX5, Jetta, Solstice). Other cars are single seaters which by nature should be a spec series in IRacing. When you bring in a new car it will probably draw people away from the other series. I would love to race the Corvette or Ford GT in a standalone series but the numbers are not there to support it. I was going to race the Falcon last night but no one, I mean no one showed up. So more then likely the Caddy will have to be joined in with another car (i am hopping the Riley, the mustang should not be in there), the Mclaren will probably be standalone or join maybe a GT1/GT2/GT3 series. But what car will lose out when the Mclaren comes out? I know I will buy the Mclaren on day one, but I will lose time driving the Corvette. So I am kinda stuck, but that's just me.
My money is on a Caterham since Lotus is already in the game, Lotus is now Caterham, or Caterham is now Lotus, however that is, it seems to change monthly on who is Lotus. It seems that Iracing is run more as a marketing tool for manufacturers and not run by enthusiasts of motorsport. So whoever shows up and says can we put our car in your game as advertisement, then it happens. It doesn't seem that Iracing is going out to get Licences to add their own cars. I don't blame them because I am sure this is the cheaper way to get cars in game but if claim that you are motorsports simulation, then simulate the the motorsports and figure a out a way to get more then one car into a class, and bring in more enthusiasts cars like the Porsches, the BMWs, the Ferraris.