Should the federal government invest in the construction of a high speed rail?

I think a high speed rail that connects ALL capital cities, and the major cities in Western Australia would be a good thing, because it would cut down drastically on for example pollutant emissions, while also cutting down travel times cross-country by dramatic margins. The other states have major cities close enough together that the current transportation networks are sufficient.

Yes, but only when other issues like cost of living and the housing crisis are properly addressed and eased.

No, Australia is too large and has too extreme weather to safely have high speed rail. Unless it's all done underground...

You're only many years behind on such a thing but government seems too inept at building and actually having it both workable for the people and cost efficient. Before government invests in anything it should be removed and replaced with a fresh lot of people. Liberal and labour need to be dismantled and the 2 party dictatorship abolished.

With all the billions of dollar being poured into projects like the Sydney metro and others new lines it makes no sense to then create something that would effectively make it redundant

Yes but contract Japan supply, manage and build it and set up maintenance infrastructure and train our citizens to manage the network. If Australian unions and bureaucrats get involved it will sub standard, take decades or never be completed and unions will make it u affordable as costs will keep escalating

not necessary.