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Originally Posted by prism
BMW is well advanced in the hydrogen combustion engine technology as they have developed a method of keeping the fuel tank at the required cool temperature for up to over a week. The major hurdle at this point is not so much technological but more to do with infrastructure, ie even if they were to launch a hydrogen car tomorrow, how would you refuel it? It will take years before governments take the initiative to develop a network of hydro fuel stations.
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No matter if its hydogen or whatever, infrastructure will be a hurdle. It will always take time for the public and the government to adapt to a new technology such as a new fuel source. Everything can be accomplished at a timely manner depending on money and the urgency of replacing gasoline.
I'm not sure if BMW overcame the stabilty of storing hydrogen at extreme temperature when you're in Finland with sub zero temperatures or if you're in the Dubai desert with hell-like temperatures. At those extreme conditions hydrogen will be very unstable. The technical conundrum is finding a way to store the hydrogen safely and efficiently for public use, I don't believe BMW or anyone else has found a cost effective or a way at all to accomplish it.