Does that rule only apply for aircrafts though? A stealth tank comes out of the war factory already cloaked.
I've tried it before myself... could not get the aircraft to come out cloaked. It has to be somewhere in the rules... you would think you could copy the ini of the stealth tank then just change it's loco. to that of an aircraft and it would work.
It would be nice to have a totally invisible aircraft flying around I'm sure.