[lack-of-trust]

Chevy Volt ($33,500) vs Mazda 3 ($15,345)

The Mazda 3 gets 33mpg highway so with the $18,155 you save you can buy 6,051 gallons of gas ($3/gal) and drive almost 200,000 miles.

[ctdonath2]

Now tack on the cost of running the Volt the same distance (electric or gas charging). Probably pushes it out to 300,000 miles before the Volt has the cost advantage.
Oh, and that doesn’t take into account maintenance - nobody is ready to fix that thing.