On long road trips we would use the bench seat for our dog and lose the front cup holders. This model snaps into the upper glove box so that the front has cup holders not in the doors again. I do not reccommend putting more than 3 in your glove box and it gets difficult to close and may be prone to popping open. The back hook and brace is designed so that even if the door springs open the cup holders will stay in place.

Since this will be inside your car, PETG or ABS is recommend.

SCAD file supplied with the latest tweaks including a cleaner bottom so that it works if you decide to widen the model.