For those of us who can afford to loose a few pounds, the aircraft for us is being developed at the Univ. of Toronto....
Happens to solve the ethanol/LL debate quite 'cleanly' also.....

http://vimeo.com/15168317

There are a couple more vids of the same flite there to watch, too.

I saw that.
Way cool!
Another 10 or 20 or 50 years and should be some really interesting flying mowchines.
Live wing sort of amphib.
Like a Heron or other long wing bird...

Be kinda neat to see.