Tesla's new user interface has sparked criticism due to its handling of mixed states and actions, a challenge that designers have long addressed in digital and physical systems. The interface struggles with clearly differentiating between the current state and the action to change it, exemplified by ambiguous elements like the "open" button for the trunk and frunk, which can confuse users about whether it indicates a state or an action. This issue extends to Tesla's mobile app, where inconsistent design choices further complicate user interaction, despite a clearer presentation in the "controls" menu. The article argues for consistent and predictable UI/UX design to enhance usability, noting that while Tesla's products are generally well-crafted, the interface design could benefit from improvements that reduce user cognitive load and confusion, keeping in mind the "primacy effect" and the potential impact of changes on existing users.