Funkwerk, one of the first companies to adopt D back in 2008, switched their passenger information system from Java and C++ to D. They weren't just on the look out for something different. They had a real problem to solve, tried out a few languages, and settled on D. They're still using it today (they moved from D1 to D2). And if you're riding certain rail networks in Europe, you're benefiting from it.
https://dlang.org/blog/2017/07/28/project-highlight-funkwerk...