Yes, that would be Imperial gallon.

Fuel efficiency for the Panda is pretty reasonable. During a recent long weekend fishing trip to the West highlands of Scotland around Oban (Loch Etive, Loch Awe etc), we loaded up the little Panda with 3 people, all our fishing tackle (sea fishing and freshwater loch fishing) and a couple of 70 litre Bergen's. One of the Bergen's sat beside the passenger in the back. The Panda was probably at its maximum useful weight limit load capacity. The Panda was still getting 50+ mpg or around 43 mpg (US). Acceleration wasn't the greatest on the Narrow, tight and windy roads but it did get up Glen Ogle climb perfectly OK.

There are cars that are a lot faster of course, such as the MINI John Cooper Works GP getting a top speed of around 150 mph and very good acceleration 0-60 in under 6 seconds but still achieve around 40 mpg (imp) (normal everyday use) especially if only carrying your 40-60lb BOB.

Would it be an advantage to have this kind of performance as in some circumstances a 'wacky races' might ensue during a emergency Bug Out?

http://www.youtube.com/watch?v=717t2oYLGkU

The trade off is getting from A to B very rapidly ahead of the rest of the crowd instead of carrying everything including the kitchen sink in a Jeep Grand Cherokee which might get you 12 mpg or considerably less whilst stuck in a traffic Jam.

One of my Buddies brothers had a Jeep Grand Cherokee, which we gave it a nickname - 'Bulge Tiger 2' i.e. it would run over anything in its path but would run out of petrol half way before its objective...