Think your network is fast? Getting a gigabyte-sized movie over your local wireless network to your hard drive in a few seconds is old hat. Now thereís a network that can push a 2-hour, high-definition movie to a computer a mile away in less time than it takes to read a single word. At the Karlsruhe Institute of Technology in Germany, a new record has been set: 40GB per second over a distance of about .6 of a mile. Thatís like sending 10 high-def feature films .