09/14/12 IMS Radio is reporting that EJ Viso Tweeted that if the downforce formula isn't changed for this weekend, he's vacating his seat for the race.
Earlier in the week Mike Conway "retired" from oval races.
According to IMS, Viso has agreed to at least try the evening practice session to see if he might feel more comfortable when the sun goes down.
Viso is normally very visible in the paddock, but has been conspicuous by his absence today. Viso qualified 22nd, some 6 mph slower than the pole speed.