In the layout editor, make the ground rise and fall.

It's a layout editior, not map/track editor.

would be nice to have something like a bridge so we can make tracks like in the "race of champions" which is very exciting to watch and drive.

Quote from Fischfix :

would be nice to have something like a bridge so we can make tracks like in the "race of champions" which is very exciting to watch and drive.

+1