Following on from a substantial update to RaceRoom Racing Experience and re-shuffling of in-game car classes, Sector3 Studios have today released for purchase the Audi R18 TDI Ultra to join its fellow prototype counterparts in the LMP1 class in the game. The R18 is now available to purchase in store, however, working offline multiclass racing is not currently implemented in game, but is being worked on by the studio. Of course online multiclass is live and the team over at Sector3 are currently testing large grid servers to improve stability under heavy load. Sector3 have released the short teaser video below giving fans a first good look at RaceRoom's latest offering. Check out the RaceDepartment RaceRoom Racing Experience Racing Club for high quality and friendly club racing across all the content within the simulator. #instabuy? Have you tried the Audi in game yet? Will you be making the purchase of this legendary LMP1 machine? Let us know in the comments section below!