Attention Australian Governments
Australian Governments: this is what could happen if you freed up geospatial data relating to public transport:

Not that Australia will turn into London, that people will be able to make things like this: a real time moving map of the London underground. You'll have to click though to get the full effect, but imagine that all those yellow markers are moving trains and you'll get the idea.
There's one available for Britain's National Rail Network, only it's not quite as live – it's more a mathematical study involving trains running to their scheduled times... Thanks very much to Matthew Somerville who put it together on Science Hackday last weekend using the recently released TfL (Transport for London) api.