If you want this to happen, please add the feature request on Waze Uservoice page. and make sure to vote for it.
On my side the development has been done for months. The only thing preventing this from happening right no is that Waze stopped adding new apps to the music player app list…
An error occurred while saving the commentGeorge commented
Podcast Addict integrates with Android Auto as does Waze. I think that's a better way to go. Anyone with an Android can run Android Auto. You don't need a car that supports it.
Next version will allow you to customize Android Auto controls and provide a playback speed toggle button
Unfortunately for now this can only work from services hosting all the content. Because podcasts are hosted on their own services/servers, this cannot be done. Hopfully this will change in the future…