("what text?" was not my idea; you can't change the prompt; smh)
Say the (mostly) complete address or location name without any long pauses
You'll be presented with a list of results, and Siri will begin to read them. You can respond verbally or tap one of the results (even with CarPlay 🚗). Select one of the results or tap/say cancel to cancel.
The default map app you specified during setup will open with directions to the destination, and you'll see a notification that navigation was set on your Comma device.