Originally developed at the University of Minnesota, personal rapid transit (PRT) systems are now being explored further by a spin-off company called Taxi2000. The system is designed to operate on raised guideways and is set up in grid formations that can easily be expanded. While still in the planning stages, a great deal of information is presented on the Taxi2000 homepage. Many publications can be downloaded, including detailed descriptions of the Taxi2000 concept and a projection for ridership in the Twin Cities area. Video animations show how the system will operate and easily fit into crowded cities. News about the construction of a prototype and other progress is also given online.