How do I refuse an airport drive when I'm struggling to stay awake?
HealthMy brother chose a flight arriving at midnight after I agreed to collect him. When I told him I have been fighting sleep on evening journeys, he said, "Buy a strong coffee. It's only forty minutes."
I am not doing that drive. [NHTSA warns that coffee alone may not overcome serious sleepiness and that drowsy driving can cause crashes](https://www.nhtsa.gov/risky-driving/drowsy-driving).
My partner has also noticed pauses and gasping during my sleep. I have contacted my GP about the daytime sleepiness and those observations; I do not know the cause yet.
My brother has a taxi quote of about £70 and thinks changing the plan leaves him with my bill. I understand that he relied on my offer. I would like to help find another arrangement without bargaining over whether I should take the wheel.
What is a fair way to discuss the inconvenience once the drive itself is off the table?