A good friend of mine always thought it would be cool to build an indoor dragstip. I am sure it would be expensive, but I have seen tractor pulls in a hockey areana that seated less than 6000 people (boy was it loud!).

Lots of ventilation, lots of sound deadening, but it could be climate controled, the smoke around the burnout area could be drawn out from the bottom like a spray booth, the track could have cooling/heating elements underneath to keep it at a constant temp, no wind, mo precipitation or moisture, and year round racing! If it were my design, I would start with 1/8 mile and would have to limit it to certain cars (no top fuelers, or funny cars or anything crazy like that).

Sure is fun to dream about, and I am sure alot of others have thought of this, some have maybe even done it? Not that I know of, but would be neat to hear some stories if it were.