Honda have been doing blurbs about their "jet dreams" for a while now. I came across this link
http://www.honda.co.uk/warmtechnology/ a while back while trying to find pics of their robot for my toddler. (You'll have to click on the purple "dreams" square or watch some of the blurb and follow links.)
Some interesting ideas, but, as always, it'll depend how it works in real life.
Bobbsy