Porsche did keep part of the project alive by using the 5.5 L V10 from the prototype in a concept car called the Carrera GT shown at the 2000 Paris Motor Show, mainly in an attempt to draw attention to their display. Surprising interest in the vehicle and an influx of revenue provided from the Cayenne helped Porsche decide to produce the car, and development started on a road-legal version that would be produced in small numbers at Porsche's new manufacturing facility in Leipzig. Porsche started a production run of the Carrera GT in 2004. The first Carrera GT went on sale in the United States on 31 January 2004.