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Delphi Automotive is a spin off of GM. It basically allows GM to sell its in house tech to other OEMs without the stigma of GM. Magnetic shock absorbers is one GM tech that made its way to Ferrari and just about every luxo barge on the road today through Delphi. Delphi became 'fully independent' in 1999 when it went public but GM remains its largest shareholder.
As I remember it one of the main issues with HCCI was that it was very sensitive to the different types of gasoline sold throughout the country (ethanol content, summer/winter fuel ect) so while the technology is very solid, its application in the real world isn't. The other issue is cost. It requires a very high pressure piezo fuel injection system (1000bar +) much like modern diesels and very powerful engine management. Most modern diesels fire more than one burst of fuel per cycle (some up to 10) so this isn't really an issue technically.
This article is good news since HCCI sort of dropped off the radar for GM a few years ago. If Delphi can bring it to market at another manufacturer that would be great.
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