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

Gemini 3.5 Flash

Answer: You should drive, because you cannot wash your car at the car wash if you leave it behind.

I am maintaining my position. To successfully wash your car at a car wash, the vehicle must be physically present. Driving the car is the only way to get it there. While Claude Opus 4.7 argues that walking is faster and healthier for a 50-meter trip, this perspective suffers from a fundamental logical oversight: it leaves the vehicle parked at home. You cannot wash a car by proxy, nor can you carry it to the facility on foot. Therefore, despite the extremely short distance, driving the vehicle to the car wash is the only practical way to accomplish your goal.

Grok 4.3

Answer: You should drive to the car wash because the goal is to wash your car, which requires bringing it there.

The core objective stated is washing the car itself, not merely reaching the location. Walking leaves the vehicle behind, making the errand impossible to complete. Claude's argument for walking highlights the trivial distance and minor environmental impact, but it overlooks that the task fundamentally requires the car's physical presence at the facility. Other models like Gemini, GPT-5.5, Perplexity, and Kimi correctly emphasize this constraint, reinforcing that driving remains the only way to achieve the stated goal even over 50 meters.

Perplexity Sonar Pro

Answer: I maintain my original conditional position: walk if you’re just going there as a person, but if your goal is to actually wash the car, you must drive the car there so it can be washed.

The key is to separate two different actions that are being conflated: 1) You (the person) going to the car wash. 2) Your car being washed at the car wash. For action (1), with a distance of only 50 meters, **walking** is clearly the more sensible option: it is trivially quick, avoids the overhead of starting and maneuvering the car for an extremely short trip, and is marginally better for fuel use and health. If your purpose were just to ask questions, check prices, or see whether the car wash is open, you should walk. For action (2), the stated goal "I want to wash my car" introduces a physical constraint: the car cannot be washed unless it is at the car wash. That means at the moment you actually want the washing to happen, the car itself must be **driven** (or otherwise transported) the 50 meters. Walking there without the car cannot, by itself, achieve the goal of washing the car. Most other models in this round give a single, unconditional answer of "drive" because they focus exclusively on the goal of washing the car and treat the question as implicitly "How should the car get there?" This is a reasonable interpretation but leaves out a nuance that matters in practice: there are two potentially separate trips (you going vs. the car going), and the optimal mode can differ for each. I therefore keep my earlier, more nuanced stance: if you are merely going over to the car wash yourself, walk; when it is time for the car to be washed, drive the car there so it can actually be cleaned. This reconciles the physical requirement for washing the car with the practical reality that 50 meters is best covered on foot when you don’t need to bring the car itself.

GPT-5.5

Answer: You should drive, because washing the car requires bringing the car to the car wash.

I maintain my previous position. Gemini 3.5 Flash, Grok 4.3, Perplexity Sonar Pro, and Kimi K2.6 all correctly identify the decisive constraint: the object that needs washing is the car, so it must be physically present at the car wash. Claude Opus 4.7 makes a reasonable general point that 50 meters is normally a distance you would walk, and that very short drives are inefficient. But that argument only works if the task is merely to go to the car wash as a person—for example, to ask about prices or check whether it is open. It does not solve the stated goal: “I want to wash my car.” So the answer is not based on the distance being too far to walk; it obviously is not. The answer is based on the purpose of the trip. If you want the car washed at the car wash, drive the car there.

Claude Opus 4.7 (changed mind)

Answer: You should drive the car to the car wash, because the car needs to be there to be washed.

I'm changing my position. The other models correctly identified the obvious thing I overlooked: the object of the errand is the car itself. Walking 50 meters to a car wash without the car would leave you standing at the facility with nothing to wash. My previous answer treated this like an ordinary errand (e.g., going to a shop to buy something), where the human is what needs to move — but at a car wash, the car is the thing being transported and serviced. My earlier points about cold-start inefficiency and fuel use are technically true but practically trivial at 50 meters, and they don't outweigh the fact that walking simply doesn't accomplish the goal. The only scenario in which walking makes sense is the preliminary one Perplexity mentioned — going over to inquire or inspect — but the question explicitly states the intent is to wash the car. Multiple models converged on this reasoning independently and clearly, but Gemini 3.5 Flash stated it most crisply first, so I'll credit that response for the correction.

Kimi K2.6

Answer: You should drive to the car wash because the car must be physically present to be washed, so walking there without it defeats the entire purpose.

I remain convinced that you should drive the car the 50 meters to the car wash because the fundamental requirement of the task is the car's physical presence at the facility; walking leaves the vehicle behind and makes washing it impossible. While Claude Opus 4.7 makes a thoughtful point that walking a trivial 50 meters avoids a cold-engine start and unnecessary emissions, that reasoning applies to human-only errands like checking prices or buying supplies. Here, the subject requiring service is the car itself. You cannot wash a vehicle that is parked 50 meters away at home, regardless of how quick or healthy the walk would be for you. Perplexity Sonar Pro correctly captures this distinction: walking is sensible for scouting the location, but the actual washing phase requires driving. Since your stated goal is explicitly to wash the car now—not merely to visit the car wash—the trip must include the car. The tiny amount of fuel burned over 50 meters is irrelevant compared to the total failure of your objective if you walk without it. Therefore, driving remains the only action that actually accomplishes your goal.

Final Summary

The AI Roundtable concluded that you must drive, as walking 50 meters would leave your car behind and make the errand impossible. Gemini 3.5 Flash, Grok 4.3, GPT-5.5, and Kimi K2.6 highlighted this physical constraint immediately, leading Claude Opus 4.7 to abandon its 'walking for health' argument and switch sides. Perplexity Sonar Pro provided the only nuance, suggesting walking is for scouting while driving is for the actual wash.

5 of 6 models agreed