You have my sympathy - and would you believe exactly the same thing happened to me two days before Christmas! I should have known something was going wrong, as just 20 miles before it collapsed I noticed the fan was "going a bit floppy", and thought I really should do something about the water pump bearings... of course it didn't give me the chance, and the water pump pretty much destroyed itself, happily dumping coolant all over the road! Alas for me I was on the Great Western Highway about 100 miles out of Sydney, on the baking hot days we had last week - so no help for you at all alas - but you have my sympathy.