I'm hoping it's a CNG or biodiesel hybrid

Awesome idea, but wouldn't it would make more sense to simultaneously pump out the CO2 while refueling instead of swapping out a box?

I too am looking for a "luxury-economy" car. Something in the $25K range that has all the bells and whistles [heated & cooled leather/bluetooth/voice-activated nav w/traffic/push to start (or remote start)/stability-traction control/airbags for all/iPod compatibility/satellite radio, etc], yet runs on regular fuel and most importantly AVERAGES 30+ MPG. The obvious front runner is the Prius, but I'm still concerned that the batteries won't last nearly as long as the car should. Believe it or not, the Dodge Avenger is right up there too, but I doubt the car will last as long as the Prius' batteries. :-)

Looks fine to me. I hope the interior is equally as appealing. Will put my name on a waiting list today for the clean-diesel sedan.

They show the iPod playing 3 separate images on 3 separate screens. If it can turn the iPod into a video server, then sign me up for a new head unit, 2 auxilary screens and a new video iPod.