Tracy Villa is equipped with many gadgets to assisst rescues, one of which is a Map Display Unit. This allows Jeff Tracy to plan rescue operations using large scale maps on a display screen.
This device came in very handy in The Perils of Penelope, when plotting the location of the Anderbad Tunnel. Using this map unit, he was able to direct Virgil to a safe landing spot.
Unfortunately, Alan still had to find it on his fold-out version.
The Anderbad Tunnel, highlighted on the map
Alan with his fold out map