I personally think (actually, know) that ambient superconductors are around the corner within 10 years and indeed will be a disruptive technology After a quick google search, I found a website that explains the inherent advantages of ambient superconductors in terms that I can understand. Note the before/after pictures ;>0 <A HREF="http://www.pukka.net/snotsykims/gravity/" target="_new">http://www.pukka.net/snotsykims/gravity/</A>