Japan is arguably at the forefront of fast rail with its bullet trains that travel at more than 500km/h.

Recently, plans for fast rail in Australia have been proposed but never gained any traction.

The estimated cost of building a high-speed train line from Sydney to the Central Coast was $32 billion.

Rail Back On Track Advocate Jeff Addison told Shane Doherty on 4BC Summer Drive, "Without knowing details, if we were to extrapolate out that distance [Sydney to the Central Coast] for that cost for, Brisbane to Cairns, you'd be looking at a cost of $324 billion, which I can't see happening."

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