The Joss JP1 was a supercar developed by Joss Developments which never made production. The first test vehicle, known as the JT1, was designed, engineered and subsequently launched in 2004. It was shown to the public at the Melbourne, Adelaide and Sydney Motorshows to critical acclaim, and established the company as a serious supercar operation. The prototype vehicles achieved performance figures in testing with an acceleration time of 0-100 km/h in 3.0 seconds and a quarter mile time of 11.7 seconds at 130 miles per hour (210 km/h).