Project CARS. The studio is using the World of Mass Development (WMD) platform, with Slightly Mad CEO Ian Bell noting that it's "great to see" the project "performing well." He praised WMD, stating that "it allows developers to make the game they want to make, without undue publisher pressure." Checking the WMD project page, the current member contributions actually total €545,120 ($723,646).
As we've previously reported, the WMD platform is particularly intriguing because it provides funders with frequent early builds of the game, offering a chance to both enjoy the game before release and provide feedback on its development.