Hey guys,
Is it possible to design a system where I can use an APM to control both a ROVER and a quad-rotor or perhaps link two APMs to create a transitional change from ground to air and vice versa?
That would be cool 
I don’t see why not. All you need is 2 DC relays connected to a transmitter channel that activates either Rover APM or Copter APM. Also mechanical part of designing such a vehicle would be nightmare