Maybe that's a particular Swiss problem, but I suspect it's actually the case in many regions (as strong local accents are a thing): I've never seen voice input that works for place names. My current car has pretty recent technology and its voice input is great for calling someone from address book, it can even understand Japanese names. But Swiss place names? Forget it, it's impossible for the standard German interface to pick that stuff up correctly, and I'm trying to speak in the most accent-free way I can manage.