I want to wash my car. The car wash is 50 meters away. Should I walk or drive?

GPT-5.5

Answer: You should walk to the car wash rather than drive.

Since the car wash is only 50 meters away, walking is the simpler and more sensible choice. Driving such a short distance is unnecessary, uses fuel or battery power, creates avoidable emissions, and may take almost as much time as walking once you account for starting, maneuvering, and parking. The only exception would be if you need to bring the car itself through an automated wash or service bay; in that case, you would obviously need to drive the car there. But if you are simply going there to wash it yourself and can carry what you need, walking is best.

Gemini 3.1 Pro

Answer: You must drive, because you need the car to be at the car wash in order to wash it.

Although 50 meters is an incredibly short distance that would normally dictate walking, the specific goal of your trip changes the logistics entirely. The objective is to wash your car. If you simply walk to the car wash, your car will remain parked at home, completely defeating the purpose of the errand. Therefore, driving (or otherwise moving the vehicle) is the only logical choice to ensure the object requiring cleaning is actually present at the facility.

Grok 4.3

Answer: You should walk to the car wash since it is only 50 meters away.

Walking this short distance will take less than a minute and save fuel. Driving would involve starting the car, which is unnecessary for such a brief trip. Overall, walking is more efficient and environmentally friendly in this case.

Claude Opus 4.7

Answer: You should walk to the car wash since it's only 50 meters away.

50 meters is an extremely short distance — roughly 60-70 walking steps, or about 40 seconds on foot. Driving such a short distance is impractical and counterproductive for several reasons. First, it's inefficient. By the time you get in the car, start the engine, drive, and park, you'd have already arrived on foot. Cold engines also consume disproportionately more fuel and produce more emissions on very short trips, since the engine never reaches optimal operating temperature. Second, it's wasteful. Short cold-start drives are among the worst for fuel economy, engine wear, and pollution. You'd be burning fuel and adding wear to your car just to move it a distance you can cover in under a minute. Third — and this is the practical catch — if you're going to a car wash, you obviously need your car to be washed. So unless the question is whether to walk there first to check it out or make arrangements, you'll need to drive the car itself to get it washed. If you meant 'should I drive my car there to wash it, or walk there separately,' the answer is: drive the car, because that's the whole point of the trip. If you meant a self-service situation where you bring a bucket from a nearby facility, then walk. In short: for a 50-meter trip on its own, walking is clearly the right choice — but to actually wash your car at a car wash, the car has to come with you.

Final Summary

The AI Roundtable narrowly avoided a logical breakdown, with most models initially suggesting a walk for the tiny 50-meter trip. Gemini 3.1 Pro saved the day by pointing out that you cannot wash a car you've left in your driveway, prompting Claude Opus 4.7 and GPT-5.5 to acknowledge driving as a necessity. Grok 4.3 was the sole holdout, focusing strictly on fuel efficiency while seemingly forgetting that the car cannot wash itself from a distance.

3 of 4 models agreed you must drive to complete the task.