They're from the same landscape indeed, something I'm doing for Jon. But again, nothing refined yet. And the roads here are from a mask, not a simple shape. Speaking of simple shapes, of course you have to set a certain location and depending on the main axis of what you want for a road (or whatever) you tend to redirect the Z or X. You can do both, but if the road is principally North-South, best to warp in the X direction. If you want your North-South road about 500 meters eastwards, then set the X to 500, but that's obvious.