"john smith" wrote in message
...

I don't know about other sites, but Talledega puts up a temporary tower on
race day, so I am guessing a temporary Class D airspace goes along with
it.

Probably not. Controlled airspace just isn't established for these
short-term events. Fond du Lac gets a temporary tower each year during the
EAA convention, but there are no airspace changes. Sheboygan got a
temporary tower for the PGA tournament but there were no airspace changes.