What, another hybrid sport-ute? Yep . . .

Porsche Cayenne hybird concept

What it is: A parallel-type hybrid for Porsche's zoom-zoom sport-ute.

How it Works: The Porsche Hybrid Manager (ie., computer) runs a clutch/electric motor assembly in parallel with the gas engine, allowing electric power to be generated at all sorts of road speeds. Porsche claims the Cayenne will run on electric juice alone at speeds up to 75 mph (!).

When You Can Get One: Still only a concept: no production dates have been set, but rest assured, you'll see this puppy in showrooms by the 2010 model year.

Price: If you gotta ask, you don't wanna know.

Our Take: Like most Porsche systems, the Cayenne Hybrid Manager would take an advanced degree in engineering to properly explain, but with its claimed 30% improvement in fuel economy and the ability to run at legal speed limits on electricity alone, we can't wait to testrive one whenever a prototype's available.