Is in great danger of being cancelled. From the TVR RE:

"Let's see expenses for the Test Day will cost approx $7300.00 and of today we have 5.5 entries. Not very good numbers when there is $200 per entry.
Now if you are interested but haven't entered the test day then please enter soon........ we don't have Obama to help us."

Even if you don't race that weekend and are in the area, this is a good value for a test session.