Hal:
Do some back-of-the-envelope calculations on the energy storage in the AirCar and let me know how they turn out / compare to mine (which don't correlate with the AirCar projections). Imagine transferring enough mechanical power to propel a car two-hundred miles in three minutes, that in itself sounds fishy. (gasoline can do this because the energy is stored in chemical bonds) Also, it DOESN'T have a zero pollution factor unless that compressed air is made with solar/wind/hydro/nuclear power. Likely the compressed air will come from an air compressor that runs on gasoline.

In my eyes, the Volt doesn't have the exact same target market as the Prius, so it is hard to compare the two. The Volt will be more stylish, while I've heard some people refer to the Prius as the Birkenstock of cars. Until someone brings some hard market research data to the table, all statements about sales projections (including mine) are speculation and opinion.

If you all don't think these automotive engineers know anything, you should visit SAE World Congress next week and participate in a few technical presentations: http://www.sae.org/congress/

Everyone yells "vaporware" around here. Don't you understand the idea of "under development"? No, its not yet made, but it is being worked on with the full intention of bringing it to the market.