One of the promised features during the game’s crowdfunding campaign on World of Mass Development was that a Wii U port would eventually appear alongside its PC, PS4, and Xbox One companions.
However, Slightly Mad announced back on May 27th that the Wii U version of Project CARS is on an ‘indefinite hiatus’ with Studio Head Ian Bell saying:
That’s a very different stance to what they promised during their crowdfunding campaign, however /u/ThyGrimOfDeath over on the subreddit /r/GamerNews has discovered a forum post from Ian Bell.
Unfortunately, I think it’s safe to say that Nintendo users won’t be seeing Project CARS for a while.
Slightly Mad also announced a few days ago that work on Project CARS 2 has already started, and they will be utilizing their crowdfunding platform, WMD, once again. You can find everything about that here.