The Maglev train that can travel at the speed of light! More information on it
here
Here's an assignment I recently did on advances in technology, and how/where they could be used. I based mine on the matchbox web server which is essentially a fully functional web server the size of a matchbox. Other students in the class did a wide range of topics such as Biometrics, Robots etc.
http://surfionline.com/random/ipt_matchboxserver.pdf
There's alot we have to look forward to in the future...