After 3422Km, 45Hrs driving at 74Km p hr average speed the fuel consumption is rapidly improving to 12.4L per 100Km. This of course might have something to do with the white Falcon not being chased by a white Swan. It is now the Generals turn to be chased by the white Swan and it wil be interesting to see its fuel consumption go up.
The Commodore's turn for towing duties
Or perhaps it is because you are driving slower and slower! Or was the van behind the commodore?
Perhaps you should have hired the Pajero. 10 litres per 100km driving around town. 8 litres per 100km driving from Sydney to home.