Chrysler and GM use the similar system in the large truck hybrids the durango / aspen & GM yukon truck. Although Chryslers system is a much more complicated version. They engineered even more fuel saving enhancements than the basic GM version.

Also the Volt is using totally different technology than the truck system.

And yes BMW / Daimler / GM / And Chrysler have all been working together on new systems. But remember the German companies played a lesser part because they are looking toward high mileage Diesels for mileage, while Detroit is looking more towards electrics and cylinder deactivation. Chrysler actually played the largest part in development of this technology, they've been working on it for over 10 years already.

This is good news for every American, we need to stop depending on Foreign oil already!