Nice spot. My guess is the car's going to be nice as well. And at $40,000 ($32,500 after tax incentives), they're probably going to sell every one of the 10,000 they're planning on making to people who think they're doing the right thing by driving a car that produces almost no emissions.
While it may be technically true that the car itself has a tiny gas engine that should rarely be in use, the Volt will still have a significant environmental impact. Especially since most of America's electricity is supplied by coal.
When you plug your Chevy Volt, Nissan Leaf or any other electric vehicle into an outlet, you're plugging it into your local powerplant increasing demand for coal. We're not reducing the environmental impact of the automobile, just shifting it from the Gulf waters to West Virginia mountaintops. We're also trading tailpipe emissions for those that come from smokestacks.
I don't know which is better or worse, but I do know that until 100% of our energy is supplied by wind, solar or some other magical source (which ain't gonna happen anytime soon), there will be no "clean" car and marketing it as such, even as subtly as Chevy is in this spot, is disingenuous at best.