Name of the plane[]
From what I understand, the Presidential plane is in fact called 'Excelsior' (possibly actually the type of plane). In Taking out the Trash Vol. 3, right after being briefed on how to deal with the plane, a small note comes up on the side reading 'Board the Excelsior Plane'. This can be seen in okay detail on this youtube video; http://www.youtube.com/watch?v=hz7ACTw5-Xg&feature=relmfu