I am pretty new to UAV's and everything related to it. I am working on a project where I have to implement a follow algorithm for the UAV using PX4 firmware to follow a car(both the car and the UAV will have a GPS module). The communication between the UAV and the car is through a C2X module. MAVLink is used for the communication between GCs(qGround Control) and UAV. It would be really helpful if you could give any pointers on how to go about this.