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Why don’t the two back windows in cars roll all the way down?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Apr 6, 2026 · Updated Apr 13, 2026

Look at the geometry of the door and the rear wheel well. Most sedans don't have enough space in the rear door to put the whole window.

27
Words

1 min
Read Time

#431
of 500 in Nature

-62%
vs Category Avg

The Short Answer

Look at the geometry of the door and the rear wheel well. Most sedans don't have enough space in the rear door to put the whole window.

Analysis

Key Concepts: Door, rear, look

This explanation focuses on door, rear, look and spans 27 words across 2 sentences. At 62% below the average Nature explanation (71 words), the answer takes a direct, no-frills approach — sometimes the simplest explanation is the most effective.

What This Answer Covers

This is a focused, single-point answer that gets directly to the core of the question without detours.

How This Compares in Nature

Ranked #431 of 500 Nature questions by answer depth (top 87%). This is a brief primer — the answer is intentionally short. For questions with a single core mechanism, brevity can actually be a strength.

Frequently Asked Questions

Is there a simple explanation for why the two back windows in cars roll all the way down?

Look at the geometry of the door and the rear wheel well. Most sedans don't have enough space in the rear door to put the whole window.

How detailed is this explanation compared to similar Nature questions?

This is a brief answer at 27 words, ranked #431 of 500 Nature questions by depth. The key concepts covered are door, rear, look.

What approach does this answer take to explain the two back windows in cars roll all the way down?

The explanation uses direct explanation across 27 words. It is categorized under Nature and addresses the question through 1 analytical lens.