I like to drive the rovers through the camera's POV, however it is difficult to gauge how steep an incline is, or even if its on an incline at all, especially at night. What I was thinking, is a new part for the rovers, internal placement like the batteries. On the HUD, just two simple tilt indicators, one for left/right, and the other for forward/backwards. I figure a maximum of 50 degrees for each direction(probably less, but I have no way of measuring how steep the rovers can handle.