Pollies held hostage

A driver is stuck in a traffic jam on the motorway. Nothing is moving.

Suddenly a man knocks on the window. The driver rolls down his window and
asks, "What's going on?"

"Terrorists have kidnapped Kevin Rudd, Wayne Swan, Anna Bligh and Julia Gillard. They're asking for a $310 million ransom.  Otherwise they're going to douse them with petrol and set them on fire. We're going from car to car, taking up a collection."

The driver asks, "How much is everyone giving, on average?"

"About a litre."