Not if the Panther is set up in the woods portion of the hex - i.e., beneath a partial trail break (which, for the record, I'd say is not placed onboard until the Panther is revealed).
Perhaps the RB has been updated, or a Q/A has been issued that I'm unaware of, but it does not provide explicitly the right for a player to setup a vehicle in the woods portion of a woods-road hex.
B13.31 describes *when* a vehicle is considered in the woods portion, but doesn't explicitly say you can set up there, and since you don't get to place a TB when setting up in woods its unclear if this is legal.
I believe it should be, and agree that the TB counter should remain HIP or concealed until the vehicle is revealed. I would even go further to state that no additional MP costs or hindrance can apply for HIP or concealed vehicles as I believe this is consistent with the original intent of "fog of war" that ASL set out to achieve.
The OP is rightly questioning one of the flawed areas of the RB where the mechanics require clarification.
I would happily play this situation with maximum FoW affects, but because of the lack of clarity regarding the legality of the setup I generally avoid trying to use a woods-road hex for a HIP vehicle.
One more piece of clarification for OP and others regarding this situation: If the vehicle is ON the road then as soon as a LOS is obtained to that vehicle that is NOT crossing the road depiction is gained that vehicle loses all concealment/HIP.
As Klas is much more in tune with RB edits/ QAs than I am perhaps he has some other info that refutes what I've said.
JT