Really depends on the game's style and the type of foliage. Even DC has plenty of non-billboard greenery. Evergreens and such are often 3D, but bushier foliage tends to be made of billboards.Polygonal foliage just isn't very viable yet.
(Which highlights how little some aspects of foliage authoring have changed over the years. Plenty of sixth-gen racers do things the exact same way.)
 
	 
				 
	 
	 
	 
	 
	 
	 
	 
	 
 
		 
	 
	 
	 
	 
	 ). In a track based setting it makes more sense, and in motion it's very convincing in those settings. In an open world setting though it isn't appropriate though as the illusion falls apart.
). In a track based setting it makes more sense, and in motion it's very convincing in those settings. In an open world setting though it isn't appropriate though as the illusion falls apart. 
	 
	 
	 
	 
	 
 
		 
	 
	 
	 
 
		 
 
		 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
	 
 
		