Here's a shot from the built-in level editor:

It's very similar to a 2D tile editor except you can alter the height of tiles, change the way they slope and create suspended tiles for bridges.
Texturing is simply a matter of selecting one of the (currently 8) terrain types. Road tiles are chosen automatically depending on the context - you just say 'road' and the editor does the tedious work. Some terrains blend into each other and the engine generates a unique blended texture for each situation.
I plan to expand this to allow a larger range of source textures at some point.
It's very similar to a 2D tile editor except you can alter the height of tiles, change the way they slope and create suspended tiles for bridges.
Texturing is simply a matter of selecting one of the (currently 8) terrain types. Road tiles are chosen automatically depending on the context - you just say 'road' and the editor does the tedious work. Some terrains blend into each other and the engine generates a unique blended texture for each situation.
I plan to expand this to allow a larger range of source textures at some point.