If you're adding ramps, you will hit a height restriction eventually, where the ramps will just be placed as low as the game allows. If you set your view directly overhead, you'll see that they are still being added.
As for the skyroads (elevator?), I might be wrong, but I think sicotange is still working on it. I believe the speed and height difference are manually adjusted via his local ClaViCo insim.
There should be a temp file in your replays menu that shows your last server activity. If you joined another server after that, then your best bet is trying cargame.nl
If you bought the ones like I just bought, don't bother buying the batteries for them. They accidentally shipped two and neither one lasted a day with batteries. The LED's stopped showing, but it still makes noise when the buttons are pushed. Stick to the outlet / USB.