I don't understand why the model " Brabus Tesla roadster " is like that listed:
http://www.imcdb.org/vehicles_make-Brabus_model-Tesla.html

Because "Brabus" supplied only a kit modifying only the visual aspect of the models Tesla seen their electric motorizations contrary to the models Mercedes.

I find more logical to reference them to " tesla ", but with "Roadster Brabus" in "Model".
http://www.imcdb.org/vehicles_make-Tesla.html
Origin: USA.
Built in: Germany.

Because we use this method to list "smart" modified by "Brabus".
http://www.imcdb.org/vehicles.php?make=smart&model=Fortwo+Brabus&modelMatch=1&modelInclModel=- on
http://www.imcdb.org/vehicles.php?make=smart&model=Roadster+Brabus&modelMatch=1&modelInclModel=- on

on http://www.brabus.com/en/raster.php?page=15&sub=1&klasse=13553&modell=13554 they name it "Tesla Roadster Brabus"