Symptom: You're on The X Subscription and Grok Bot work draws from the same weekly pool as Grok.
Fix: Two official facts: on The X Subscription, Grok, Grok Bot and Cursor draw from one shared weekly pool (SpaceXSI docs), and when a signed-in car hits your account limit, the car prompts you to open the Grok app (Tesla). Neither says whether basic car commands keep working at that point, so we can't confirm either way. Check your pool under Usage at grok.com/dashboard before a long trip. Touchscreen and steering wheel controls do not depend on Grok.
Confidence: medium
Whether in-car voice commands pause when the pool is empty is not documented.
Sources: [1] [2] [3]
Related: Why does my Tesla tell me to open the Grok app? · Guide: Grok Bot in Tesla: setup, plans and fixes