The new in-app voice search/command in the iOS app is fantastic and works great. You should add a tab in carplay that allow for voice searches and commands.
Updated on 2021-05-20
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You can just hit the ❤️ button and it’ll save it to liked songs....you can then sort ypur playlists from there when you’re back home.....instead of it being a toss up between running a red or making sure your playlists are in check. 😉
Sorry, I made an error, it’s a + sign in the CarPlay app, not a heart.