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Toyota trials hydrogen-powered vehicle on public roads in Australia
(japantoday.com)
This is a most excellent place for technology news and articles.
The current cost to drive a car with green hydrogen from electrolysis (not blue or grey hydrogen from methane reforming) is roughly equivalent to $50/L (AUD) for petrol, or $120/Gal (USD) for gas. This is one of the reasons most hydrogen today is made from fossil fuels.