And you thought you knew how the Volt works

[Matthijs]

http://gm-volt.com/2009/11/09/engineering-design-of-the-chevy-volts-two-electric-motors/

[KarenRei]

I don't think he's saying what a lot of people are assuming he's saying -- that there's some sort of physical linkage. Rather, I think he's just trying to say that the generator can be tuned to meet the traction motor's needs better than just mindlessly pumping out AC->DC->AC at all times.