Not sure if that's the rumors i've been hearing about, but rumor is cadilac has an engine that doesn't have a camshaft just valves that are controlled by solonoids which means you could have an infinite number of possiblitlies to tune your engine, also rev the hell out of it since their is less movable componets. Only problem i've heard about it was the voltage it was going to take and the danger behind raising the voltage to allow this system to work. I believe they were saying somewhere in the 24 volt ranger it could have been 48, but I wouldn't even be suprised if cadilac has it on the market today, cuz this was 3 years ago when I heard about this, It was too new to go into detail at that time. GM is so slow about perfecting things that honda will most likely perfect the system and get it out first though, but that's the future of gas engines after that it's over, full electronic's are taking over.