You don't have to say the name of the disease or disorder you have, just say what the dog does to help you.
Are your one on one sessions effective if you limit the distance traveled to be within line of sight of the room where the dog is unattended? Seems like it would be too inconvenient to take the dog to a kennel.
You don't want symptoms (such as barking) to be noticed back at the unattended room that may make a bystander think that there is cruelty to animals.
Animals may not be left in unattended vehicles in the sun. Just a "cracked open" window is not effective ventilation. Security and bystanders may try to attend to the animal without liability to you for vehicle damage.