What about Webador: https://slashdot.org/software/comparison/Substack-vs-Webador-vs-WordPress/

Here WeGo has great traffic data (as you would expect given that it’s owned by Audi,BMW etc

Have you tried Here WeGo. It’s owned by a consortium of European car manufacturers, and has great maps, especially for traffic. The mobile experience is event, and integrated with Android Auto.

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