What came first, the chicken or the egg? It is a question that has troubled scientists and ancient philosophers for quite some time, and continues to do so.
The question, when broken down, is a basic one. What came first, X that cannot come without Y, or Y that can also not come without X?
And it’s the latter, broken down, description of the question that applies to this article. What came first, the hydrogen powered car or the hydrogen filling station?
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