Well, I had to remove the iMac plastic , so if you thought it was ugly, the bike is back to looking like this now:

I didn't explicitly say that the iMac case would make the bike go faster, in fact, the vent holes, IMHO, would probably make the "fairing" more like a Wiffle-Ball.
There were two problems, the plastic case swayed fore and aft, and there were some small cracks in the bottom near one of the mounting screws.

I hope you all will tell me your opinion on the aesthetics of the small plywood platform, is that ugly too? Last night I actually gave a woman (she said she was "Bike Mama") a ride around a local parking lot, so this can serve as a seat for a passenger. Please don't underestimate the load capacity. There's at least seven layers of fiberglass in that 2"x4" spar.

Today, I am going to purchase some pea-gravel, and the bike will be used to carry said gravel to the muddy parts of a local trail. I will use a plastic tub strapped down with bungees.

What I was waiting for someone to notice is, there seems to be a similarity between the iMac case and the fairing on the Type 9 (bottom photo in the Original Post). Please take note of the date on the original post. I failed to mention the numerical designation of those bikes in the photos- the first three are the Type 7, the fourth is the Type 9.