From an article on the Mazdaspeed RX8 in the March issue: "Although Yoshioka wouldn't comment, sources close to the company said that the North American arm of Mazdaspeed is currently working on a supercharged version of the RX-8. There's even a rumor of a hydraulic turbocharger, which uses a hydraulic pump instead of exhaust gases to spin the turbine." "There are a number of possibilities that we're still exploring," Yoshioka said. "The life cycle of the RX-8 is a long one so we want to gradually enhance the car. This car [mazdaspeed] is the first step."