I'm not sure if this is just the PC version, but Wang Autos and Zero RC arn't required for ordinary completion. 100% I'm sure, but I got all the way through it without doing either of those mission strands (couldn't be bothered with driving school, and Supply Lines... is near impossible on a PC keyboard). I only went through and did them after I'd finished the main storyline. Even though they're considered "part" of the Storyline, they're still not required. But this could just be my version of the game (3.0).
C-d-rom 23:05, 29 November 2008 (UTC)