The project has been running since about 2007 with the first studies done in 2001!
Test models of the Wheel/Locomotion system, Drill and the Sample processing mechanism were built around 2012 and then we moved to the main Test Models, what we call the Engineering and Qualification Models in 2013 into 2017. Then we started manufacture and assembly of the Flight Rover Equipment.
We started Integrating or putting the Rover together in Sept. 2018 when most of the Equipment was ready. The Rover testing started in Sept. 2019 and is just finishing.