The cup holder sparked and starting burning after the sun reflected on a plastic water bottle placed in the cup holder, and the water bottle then reacted to the cup holder material and began smoking. This first occurred the day after purchasing the car, with the water bottle the dealership provided. It has since occurred two additional times. I notified Volvo who does not have a way to cure the defect and advised they needed to check with engineers. We have video of the smoke and burning.