Yeah, the more consideration I give it, the more I want to figure out the motorcycle aerodynamics.
The article really just brought to light that the dustbin fairings were banned for safety concerns, but it doesn't reveal the true cause of the danger. It does seem like the increased speed was the only true danger.
It wouldn't surprise me if I could hop on one of these old vintage dustbin racing bikes, and not be in any real danger, simply because I'm already familiar with riding naked vintage bikes and my riding style is pretty cautious; not race-oriented at all.
Since I started saving money for a bike, it's just given me way too much time to think and plan ahead for this kind of stuff. After nearly a year when I have enough cash to buy a bike outright, I'm sure I'll have this all figured out.
Ps. Here's another tidbit on the crosswind thing. It's the same quote, but with a picture for reference:
http://www.bikeweb.com/node/1808
Sounds like the overhang is a big no-no.