Here's a link to GM's website:
http://media.gm.com/content/media/us.../Oct/1011_volt
The heart of the matter is how you translate this paragraph:
"There is no direct mechanical connection (fixed gear ratio) between the Volt’s extended-range 1.4L engine and the drive wheels. In extended-range driving, the engine generates power that is fed through the drive unit and is balanced by the generator and traction motor. The resulting power flow provides a 10 to 15 percent improvement in highway fuel economy. "
That's like saying there is no direct mechanical connection (fixed gear ratio) in any GM vehicle with an automatic transmission. True statement isn't it?
