The Brassbolts Brothers

You ever heard of the Shimmering Flats? It's a stretch of salt flats way over in Kalimdor, just south of the Thousand Needles canyon. It's a great place for racing because, well, it's so flat! A couple of gnome brothers are out there, friends of mine, trying out their new rocket car, and from what I hear it's fast! Heh, so fast that their pilots keep crashing. Giving themselves concussions. So they asked me for some Siege Engine helmets, but I have duties here. I can't make the trip! Can you?