Setting up the new foundations in Spain took St. Teresa out of the monastery and onto the highways and byways of the Spanish countryside. Traveling in Medieval Spain was either done by donkey, horse or mule, covered wagons or a carriage. St. Teresa preferred to travel with her nuns by covered wagon. This way St. Teresa and her nuns would not be visible to the curious as they passed through towns and villages. While traveling throughout the countryside to set up these new foundations, St. Teresa moved the life lived in the monastery into the covered wagon. The life inside this wagon had a “prioress, their schedule of prayer, a water clock, a tiny bell, their breviaries, holy water, a crucifix, and some statutes of our Lady, St. Joseph, or the Infant Jesus.” Even outside this wagon there was a driver, as well as a noblemen, merchant or friend ready to lend them a hand, just like the life these nuns live in the monastery. There was even a “chaplain who would celebrate Mass in whatever little church they might happen upon along the way.”
(The Collected Works of St. Teresa, Volume 3, page 51 by ICS Publications)