I designed this insert for 2022 Rivian R1S (it's incredible). But like most vehicles, there is no convenient place to hold a 32oz water bottle. If you love your Hydroflask or Nalgene bottle, you know what I mean. The same goes for coffee/tea cups with a handle. So here it is.
This design is easily adapted for other cup holders - STEP file included for your tinkering.
Go Electric. Go Rivian!
The author hasn't provided the model origin yet.