I am pretty sure that Lawrenceburg rented the track to another promoter. That promoter has had it at KC Raceway.
I was there in 2006, and the weather was cold...the parking lots were a swamp...many, many stuck vehicles...
I could not believe how many campers, fans, and cars were there in those conditions.
Here is the website of the promoter of the DTWC.
http://www.dirttrackworldchampionship.net
Tony Barhorst
rumbleseries.com