In 1882 – Ernst Werner von Siemens presented his “trackless trolley” called the Elektromote in a Berlin suburb. The system pulled electricity from overhead wires, but used road wheels instead of tracks.
1953 – KECA-TV an ABC affiliate in Losa Angeles, California broadcast the first U.S. experimental 3D-TV. An episode of Space Patrol required specially polarized glasses to watch.
In 2005 -Apple released Mac OS X 10.4 Tiger, introducing spotlight search and dashboard functionality.