If you want to put the cup holders in your car to more efficient use (as you seldom have coffee in your car) this is worth printing. This 'Cup Holder Divider' just sits in a standard size cup holder (made to 64mm to be slightly loose and fit almost any cup holder) to divide it into three compartments. The centre compartments intended to take a Smart Phone (almost all should fit).
As a suggestion, place a piece of anti-slip rubber padding underneath to hold it in place without any potential for rattling or rotating through vibration.
On a Replicator 2 this prints well with raft, 3 shells and 20% infill..