NPD sales data. Sony's PS3-exclusive ModNation Racers, Activision's Bizarre-developed Blur and Disney's excellent Split/Second all fared poorly on the retail circuit with ModNation squeezing its way into the top 15 (on just one platform, mind you), while the other two multiplatform titles didn't crack the top 30.
Analyst Michael Pachter told IGN that he "thought the ModNation number was respectable, since the game came out only on May 25." Blur came out on the same day, so, relatively, its sales were disappointing.
While sales figures weren't provided for any of the above games, Pachter writes in his monthly NPD analysis that Blur "sold well below our estimate of 100,000 units," giving us some insight into how both it and Split/Second performed. However, Split/Second was released a week earlier than ModNation and Blur.
With two much higher-profile racing games coming out this fall, in Gran Turismo 5 and Need for Speed: Hot Pursuit, it remains to be seen if the racing genre itself is toxic at the checkout counter or if gamers have simply passed over May's hybrid concepts, content to wait for the new models of their favorite makes.