This video shows an unmanned John Deere tractor autonomously tracking a path at high speed in an agricultural field, in Balaklava, South Australia. The tractor is equipped with a rich suite of sensors and operates in RTK-GPS with twin GPS systems of 2cm accuracy. The tractor is part of the Agricultural Robotics infrastructure at UNSW. The research projects are lead by A/Prof. Jay Katupitiya at UNSW, Sydney, Australia.