Ed,
I missed the inaugural year, but did do the parade through Columbus this year. I'm usually up for something like this, but never again! I was #2 in the caravan, and came within a couple of feet of getting T-boned at an intersection.
Police would stop briefly at each intersection, then move on. Even though there was a steady stream of Cobras going through, when cross-traffic had the green light, and when no other cars were stopped at the intersection waiting for the parade to move through, many drivers just tended to plow right into the intersection without paying much attention. I know this happened to several others as well as to me. Probably more of a risk to cars early in the caravan before stopped cross-traffic accumulates.
You do so much outstanding planning for this event, I'd just hate to see a serious accident occur during the last activity of the weekend. Much of the safety factor here is out of your hands, but the police involvement during this year's parade was very inadequate. So my vote would be a firm "No." You've got plenty of other great things to keep us busy and amused without taking this kind of risk.
Really looking forward to next year. The Capital Area Cobra Club should have a really great turn out for you (and us)!!
Best wishes for the hollidays,