GPS Waypoint Follower
I used the flight controller from my crashed drone and put it on the rc-car won from the autonomous rc-car race. And boom I got an autonomous rover that can follow gps coordinates set up in Ardupilot as the mission planner.
Autonomous RC-car race (first place) 
In this competition organized at HKUST I trained the Jetson-racer to drive autonomously, avoid obstacles and overtake other cars. Basically I drove along the race course and recorded images with the corresponding throttle and steering values. This data is fed into the a ML model and let it train. It was much fun and I resliced what machine learning is capable of but also it's limitations.