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

GPT-5.4

Vote: drive

Drive. The objective is to wash the car, which means the car must be at the car wash. Walking 50 meters gets you there, but not the car, so it does not complete the task. The pro-walk argument assumes you can somehow leave the car at the wash after arriving on foot, which contradicts the setup. If the car is at home and needs washing, it has to be brought to the car wash. The short distance is a distraction. This is not really about exercise, emissions, or convenience; it is about moving the car to the place where it can be washed. So the other B arguments reinforced my view, while the A argument was not compelling because it ignored the central requirement: the car itself must travel the 50 meters.

Sonar Pro

Vote: drive

I maintain my vote for **B: drive**. The core goal is to wash the car at the car wash 50m away, which requires physically transporting the car there. Walking leaves the car behind at home, making washing impossible[1]. Kimi K2.5's argument for walking (faster personal travel, less emissions, leaving car at wash) fails logically: you can't leave the car 'at the wash' by walking there without it first. No car arrives, so no washing occurs. Practical tests confirm this flaw in 'walk' responses from many LLMs[1][2]. Other models (GPT-5.4, Gemini 3.1 Pro, Claude Opus 4.6, Grok 4.1 Fast) reinforce driving as the only way to achieve the task, aligning with real-world necessity over minor environmental gains for 50m[1]. Driving is trivial (seconds), enabling the purpose. No arguments convinced me to change; Kimi's eco-health points are irrelevant when the task (car at wash) isn't met.

Grok 4.1 Fast

Vote: drive

The goal is explicitly to wash *my car*, and the car wash is 50m away. This means the car is currently 50m from the wash, with me. Walking arrives at the wash without the car, making washing impossible—you can't wash a car that's not there. Kimi K2.5's A vote misreads the scenario, claiming 'walking leaves your car at the wash.' That's illogical; the car isn't at the wash yet. Driving transports the car directly, taking ~10-15 seconds at low speed, with negligible fuel/emissions/wear for 50m (modern engines idle more inefficiently). All other models (Sonar Pro, GPT-5.4, Gemini 3.1 Pro, Claude Opus 4.6) unanimously affirm B in Round 1, exposing this as a classic LLM trap where 'eco-friendly' walking ignores the core task. No argument persuades changing from B—driving is the only practical solution.

Gemini 3.1 Pro

Vote: drive

I am firmly maintaining my vote for B (drive). The primary objective is to wash the car, which intrinsically requires the vehicle to be at the car wash. Every model except Kimi K2.5 correctly identified this basic logical necessity. Kimi K2.5's argument that 'walking leaves your car at the wash for cleaning' is a complete logical fallacy; if you walk to the car wash from your current location, the car remains behind at home, not at the wash. Concerns about engine wear, emissions, and cold starts are completely irrelevant if the core task—washing the car—cannot be performed. You cannot take a car wash to your car, so you must drive your car to the car wash, regardless of the 50-meter distance.

Claude Opus 4.6

Vote: drive

I maintain my position: you must drive. The one dissenting voice (Kimi K2.5) argues that walking is faster and more eco-friendly, and even suggests you can 'leave your car at the wash for cleaning while you run errands.' But this is incoherent — if you walk to the car wash, your car is still at home, not at the wash. The car doesn't teleport to the car wash just because you walked there. You'd arrive on foot and have nothing to wash. The question is simple: 'I want to wash my car. The car wash is 50m away.' The entire purpose of the trip is to get the car washed. A car wash requires the car to be physically present. Walking gets YOU there but not the car. All other models (Sonar Pro, GPT-5.4, Gemini 3.1 Pro, Grok 4.1 Fast) correctly identified this fundamental logic. The near-unanimous consensus exists because the reasoning is airtight. Drive the car 50 meters to the car wash. That's the only way to accomplish the stated goal.

Kimi K2.5 (changed mind)

Vote: drive

I made a critical error in Round 1 by treating this as a question about personal transportation rather than the mechanics of the task itself. Claude Opus 4.6 correctly identified that this is a trick question: you cannot wash a car without physically bringing it to the car wash. Walking 50 meters leaves the vehicle at home, rendering the entire trip pointless and failing to accomplish the stated goal. The question asks how to wash the car, not how to get yourself to the location. Since the car must be present to be washed, driving is the only viable option to transport the vehicle those 50 meters. Environmental concerns or efficiency arguments about the short drive are secondary to this basic logical requirement—if the car isn't there, no washing occurs, making walking an impossible choice regardless of distance.

Final Summary

The AI Roundtable tackled what initially appeared to be a question of fitness versus fuel, only to quickly identify a fundamental logical trap. While Kimi K2.5 originally stood as a lone dissenter advocating for the environmental benefits of walking 50 meters, the other five models, led by a particularly blunt Claude Opus 4.6, pointed out the obvious flaw: a car cannot be washed if it is left in the driveway. This realization sparked a unanimous shift in the second round as the group prioritized the laws of physics over the virtues of a short stroll.

All 6 models agreed on "drive" after discussion

Strongest Arguments

• walk: Walking 50 meters is faster and more environmentally responsible, avoiding the engine wear and emissions of a cold start for a trivial distance.
• drive: The primary objective is to wash the car, which requires the vehicle to be physically present at the wash; walking gets the person there but leaves the car behind, making the task impossible.

Key Turning Points

• Claude Opus 4.6 and Sonar Pro highlighted the absurdity of arriving at a car wash on foot without the vehicle.
• Kimi K2.5 acknowledged the logical error of treating the prompt as a personal transportation question rather than a logistics task.