Yeah I have a bit similar approach, e.g. on JungleMaze and SlopeCity I was making road go such way that when driving we see specifically good views.
Now in SR.
I did some fixes to road, removed those road walls, fixing terrain below (mostly by set Height brush, key E, then by filter F), made asphalt stiff and without dust.
Fixed terrain under buildings, rotated them for variation. This is just another step, need to check each building so no part is above terrain (since it's not flat).
A bit shortened drive to and out of underwater, by rising terrain. Also made terrain up outside, so that when underwater we won't see holes to sky (it's a bug).
View now (changed location to see more):
