It's probably in the same place as the restroom in a car. As the pods seem to be quite small, for longer journeys, it's probably possible/practical to request

It's probably in the same place as the restroom in a car. As the pods seem to be quite small, for longer journeys, it's probably possible/practical to request for your pod to be dropped at the next station on demand if you need to go. For shorter journeys, just hold it.