What is the ruling on performing voluntary prayers on a mount for someone who is not traveling?

The Shaykh : In the name of Allah, the Most Gracious, the Most Merciful. We begin with the questions. He says: What is the ruling on performing voluntary prayers on a mount for someone who is not traveling, if the mount is moving and the one praying is able to face the qiblah, or if it is standing still? The default is that prayer is based on the Sunnah regarding what is obligatory in how one prays according to the Sunnah, and one does not pray on a mount except while traveling, unless one is able to do so, such as in large vehicles where one can face the qiblah, bow, and prostrate. But I do not think that is reasonable. Yes, that is right. I mean, the one who is in the ruling of a traveler. Yes, that is right. He prays in the town at his ease. Yes, because he is a traveler. The questioner is Muhammad ibn Salih al-Mas'udi.