Reader TML speculated in the comments of a previous entry the Invisible Man would be leaving the Andretti Green IRL quartet and moving to American Le Mans Series in 2007. Today’s news all but confirms this as AGR announces it will team with Acura to field an ALMS entry in 2007. According to the article from Crash.net (love the name):
XM Satellite Radio, which has backed the AGR IRL entry of Bryan Herta for the past few seasons, will support the move into sportscars.
Invisible Man was an ALMS driver in 2002, and XM - his current sponsor - will be sponsoring the ALMS car. It doesn't take too much imagination to see what is going on here. Every day it seems even more obvious AGR is making room for someone else.