Print in PLA or PETG. Shrinkage will occur overtime with hot temperatures in your vehicle so consider your climate for material selection. ABS may be the way to go. 20% infill is enough. 

3.75'' diameter bottle opening. This was designed for a Corolla but should fit most vehicles. For 2.9'' cup holder on the car end. Special cut out made to account for mugs with a 2'' cut out.