Personal Air Vehicles (PAVs)... I like the idea!

This I got from a blog I found today on a great site
(check it out)...
Flying Cars? Maybe Soon a 40 MPG Airplane.

"...NASA’s PAV (Personal Air Vehicle) Challenge just may be the ticket. The PAV Challenge is a contest modeled after the successful “X-Prize” Space flight competition. To stimulate rapid innovation and progress in PAV performance, NASA has funded $2,000,000 in cash prizes for the PAV flight competition.

Personal Air Vehicles (PAVs) will be a new generation of small aircraft that can extend personal air travel to a much larger segment of the American population. As a solution to America's future mobility needs..."

After reading thru the comments on the page regarding the article, I had to say...

"My thought is that we need to concentrate on 100% electric powered aircraft (and vehicles too), recharged via Solar, Wind and thermal transfer technologies (the earth isn't the only place there is naturally occurring heat that can be used to create electricity is it?) therefore reducing our impact on our environment while allowing more transportation options. It's absolutely ridiculous to suggest that we all just travel less, or just give up on flying. Maybe it's not NEEDED, but it sure would have less impact on our environment than more & more roads, not to mention the amount of waste rubber from millions of tires wearing away from millions of miles driven over those roads every single day.

Anybody ever think about trying to design ULTRALIGHT PAVs? All electric personal aircraft build for the short & medium range commuters, able to take off & land in very short distances and rechargeable (sp?) via solar systems AND plug in charging technologies? I'm not a pilot, or an aeronautical engineer, or even a real genius... but I'm really curious what arguments can be made against it :) (I know, that's probably inviting WAY more than I want to hear, but I really am curious)"

OK... up, up and away we gooooo.....