I keep my iPhone in the charging pocket, when I want to voice text I drop my right hand to the phone and press the right button on the phone and it links the phone to the car speaker allowing me to announce commands to the phone such as placing a call or voice texting anyone in my contact list, unfortunately I haven't figured out how to listen to incoming messages via the car speakers.
While speaking to a service tech several weeks ago I was informed that Lucid had pirated an Apple engineer who is now on Lucid's team working to get Car Play integrated into our vehicles, one would think this would not be a terribly difficult task seeing that Car Play has been integrated into many brands for a number of years.
Are you able to listen to your incoming texts with Sirii?