Ten years and tens of millions of dollars in the making, the Honda P3 strides down its course at the car company's secret research facility on the outskirts of Tokyo, Japan. The product of a costly decade-long effort, the Honda robotic project was only released from its shroud of corporate secrecy in 1996. In a carefully choreographed performance, P3 walks a line, opens a door, turns a corner, and, after a safety chain is attached, climbs a flight of stairs. From the book Robo sapiens: Evolution of a New Species, page 34-35.