Heh, well, if you've got a sunroof open, it has a lot to do with economy. It also adds weight to a car.
Anyway, there's been some news about the Cobalt and its eventual replacement lately. Supposedly Chevy is going to introduce a new car on the next generation of the same platform and will have a 1.4 liter turbocharged engine, so it should push 40 mpg if driven sanely. Of course, the car isn't going to appear until 2010 (2011 model year, probably). Sounds like they're going to try to push the car a little more upmarket, so I won't be surprised if it's basically the next-gen Opel/Vauxhall/Saturn Astra, just with a Chevy bowtie on the front. Then again, you'd think the Astra would already be beating the Cobalt for fuel economy, since the U.S. (Saturn) version only has a 1.8L engine. It must be heavier or something.
Anywho, some of my info is from here:
http://blogs.motortrend.com/6252095/...way/index.html
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