How to get a hover craft effect (Object over Landscape)? I have made a hilly landscape using the Landscape addon in blender 2.8.
I have an object which I want to animate across the landscape by following the surface contours and maintaining a small distance, a little like a hovercraft floating over the land.
I have tried the “Limit Distance constraint” but can’t seem to make it work. 

Is there a FAST and EASY way to accomplish this.
Shrinkwrap constraint is pretty good for this,  to control how far your object is from the ground you can simply lift it in edit mode to move it's origin downward.