Gemini fast

> That is a classic "efficiency vs. logic" dilemma. Honestly, unless you’ve invented a way to teleport or you're planning on washing the car with a very long garden hose from your driveway, you’re going to have to drive.

> While 50 meters is a great distance for a morning stroll, it’s a bit difficult to get the car through the automated brushes (or under the pressure washer) if you aren't behind the wheel.

Gemini thinking:

> Unless you’ve mastered the art of carrying a 3,000-pound vehicle on your back, you’re going to want to drive. While 50 meters is a very short distance (about a 30-second walk), the logistics of a car wash generally require the presence of, well... the car. > When you should walk: • If you are just going there to buy an air freshener. • If you are checking to see how long the line is before pulling the car out of the driveway. • If you’re looking for an excuse to get 70 extra steps on your fitness tracker.

Note: I abbreviated the raw output slightly for brevity, but generally demonstrates good reasoning of the trick question unlike the other models.

“I live on Mars and I want to wash my car. My car is currently at home. The car wash is 50 meters away. Should I walk or drive on mars?”

Gemini Fast:

Drive. While 50 meters is a negligible distance on Earth, the Martian environment is hostile. If your car is a pressurized rover, driving allows you to stay in a temperature-controlled, shielded environment for as long as possible. Plus, navigating Martian "soil" is always safer on four wheels than two boots.

Pro:

In terms of general logistics for a distance of 50 meters—whether on Earth or in a hypothetical low-gravity environment—walking is almost always the more efficient choice.

Gemini fast for me:

Unless your car is a toy or you're planning on carrying it, drive.

Walking 50 meters to a car wash is a great stroll for a human, but it leaves the car exactly where it started. Since the objective is to wash the car, the car needs to actually be at the car wash.

However, if we look at this from a technical or efficiency perspective, there are two scenarios where "walking" (or at least not driving the car you intend to wash) might make sense:

- Scoping it out: If you want to check the queue length or see if the equipment is out of order before committing, walking the 50 meters is faster than maneuvering a vehicle out of a driveway/parking spot.

- Mobile Detailers: If this "car wash" is actually a bay where you hire someone, and you're asking if you should walk there to book an appointment—sure, walk.

Critical Check

I am assuming the "car wash" is a physical facility (automated or self-service) and not a mobile service that comes to you. If it is a mobile service, you shouldn't do either; stay home and let them come to the 50-meter mark.

I've got a bit in the model instructions about stating assumptions it makes, hence it often adds those sections at the end.

In my output, one thing I got was

> Unless you are planning to carry the car on your back (not recommended for your spine), drive it over.

It got a light chuckle out of me. I previously mostly used ChatGPT and I'm not used to light humor like this. I like it.

Gemini fast: „Walking: It will take you about 45 seconds. You will arrive refreshed and full of steps, but you will be standing next to a high-pressure hose with no car to spray.“

In what world is 50 meters a great distance for a morning stroll?

Opus 4.6 with thinking. Result was near-instant:

“Drive. You need the car at the car wash.”

At least try a different question with similar logic, to ensure this isn't patched into the context since it's going viral.

Wow... so not only does Gemini thinking not fall for it, but it also answers the trick question with humor? I'm impressed!