The cup holder in Tesla X and S has no support that holds the cups or bottles in place when driving. This will fix it.
“Circle K’s” small cup will fit perfectly, the large 2018 cup does not fit. The new 2019 large will fit. Also normal water and soda bottles 0,33-0,5l will fit. The support is easily installed and comes with double sided tape. The Cup holder support is made of heat resistant black PETG.
Instructions: Cup holder support