Mazda to produce a diesel-powered Mazda6 Takeri Concept? Sweet!

The Takeri is also fitted with Mazda's i-stop idling stop system and a unique regenerative braking system called 'i-ELOOP' (Intelligent Energy Loop). The i-ELOOP is billed as the world's first kinetic energy recovery system that uses a capacitor and a 25V to 12V alternator instead of a traditional battery pack.

http://carscoop.blogspot.com/2011/11/mazda-hints-at-next-mazda6-with-diesel.html