Taking the Piss?

Heard an interesting radio programme reiterating the claim that ammonia may turn out to be a 'green' substitute for petroleum and diesel in motor transport (https://www.agmrc.org/renewable-energy/renewable-energy/ammonia-as-a-transportation-fuel). The ammonia can be used to power hydrogen-fuelled cars, with water and nitrogen as the only effluents. It was maintained that Australia is well-placed to generate this material on an industrial scale as, in the relatively unbuilt interior, there is much scope for efficient solar power to create ammonia as well as developments of catalysts to make the process more efficient. The ammonia could easily be transported to economies in China, India and Japan.