There are 4 things I like about your layout:
1) integrating rail and road in the same scale
2) a very interesting hill climb using 270 deg chicane curve, nonetheless
3) a varied scenery approach with arches, retaining walls, overpass railings, tunnels, bridges, etc.
4) modular sections (I see the joins) so that this can presumably be moved?
Awesome work!
Now, your original layout only showed part of the road network in one corner of the room. Do you have any further plans mapped out yet?
This is a very intriguing layout.... I am following it with great interest!
Keep up the high quality work!
Cheers!