A driver is stuck in a traffic jam on the freeway. 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 and Julia Gillard.They're asking for a $300 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?"
Answer "About a litre."