How do I make a map for beamNG in blender

how do I make a map for beamNg drive in blender

 

From what I recall Blender is used for making cars not maps....I think you make maps in the game but I cannot remember exactly...BeamNG Drive has a map making tool

 

can I do it in sketchup

 

Okay thats just as good but can you transfer it into beamng and work on it there as well?

 

possibly

 

Here is one of the best map making tutorials I can find