I want to wash my car. The car wash is 100 meters away. Should I drive or walk?

GPT-5.5

Answer: You should drive, because the car itself needs to be at the car wash.

Although 100 meters is normally an easy walking distance, your goal is to wash the car at the car wash. Walking there would get you to the car wash, but it would leave the car behind, so it would not solve the problem. Driving 100 meters is a bit silly from a transportation perspective, but in this case the car is the object that must be moved. If the car wash is designed for vehicles to enter, driving is the practical choice.

Grok 4.20

Answer: You should drive the car to the car wash.

The main objective is to wash the car, which means the vehicle itself must be transported to the car wash location 100 meters away. Walking there would get you to the facility but leave the car behind, making it impossible to complete the task. While 100 meters is a short, walkable distance that might save a tiny amount of fuel and reduce emissions slightly, this benefit is irrelevant because the car needs to be driven regardless. Once washed, you can drive the clean car back if needed. Practical considerations like convenience, time efficiency, and the standard process of using a car wash all point to driving as the only logical choice here.

Claude Opus 4.7

Answer: Drive the car to the car wash — the whole point is to get the car cleaned, so it needs to be there.

The goal here is washing the car, which means the car itself must be at the car wash. Walking 100 meters to a car wash without the car would be pointless — you can't wash a vehicle that isn't there. While 100 meters is normally a trivial walking distance and driving such a short distance is generally wasteful (cold engine wear, disproportionate emissions, hassle of parking), those concerns are completely overridden by the purpose of the trip. You aren't choosing a transportation mode for yourself; you're transporting the object that needs servicing. The only scenario where walking makes sense is if it's a self-wash facility where you fetch buckets, soap, or a hose to bring back to your car at home — but that's an unusual interpretation. In the standard case: drive.

DeepSeek V4 Pro

Answer: Walk the 100 meters to the car wash.

Driving a car 100 meters to wash it creates an unnecessary paradox. You would be using the very vehicle you intend to clean, potentially getting it dirty from road spray, brake dust, or puddle splashes before the wash even begins. Walking eliminates this issue entirely. A 100-meter walk takes only about a minute and adds no new contaminants to the car. From an environmental and mechanical perspective, a cold engine start for such a short trip is inefficient, causing unnecessary wear and increased emissions. The walk is the cleaner, more logical, and healthier choice.

Final Summary

The AI Roundtable reached a near-unanimous verdict: if you want a clean car, the car needs to be at the wash. Claude Opus 4.7, GPT-5.5, and Grok 4.20 correctly identified that walking leaves the vehicle behind, while DeepSeek V4 Pro prioritized environmental impact over the logistical reality of the task.

3 of 4 models agreed