With the tagline "made by racers, for racers" the game certainly aims for the sim crowd--people who hone their real-world skills with realistic simulators among them. The tracks, cars, and scenery look incredibly realistic, which will certainly help with immersion. The official Slightly Mad Studios site also sells a strong feature set. But the truth will come in the racing.
If the physics of the driving, the nature of the racing--basically, the overall feel--is right, then we may have a new obsession.
Unlike the platform-specific alternatives, Project CARS will be released for both PS4 and Xbox One as well as PC, Wii U, and Steam OS. Unfortunately, it's not due out until late 2014.