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title: This former PG&E engineer is building a ‘Google Maps for the underground’
url: https://techcrunch.com/2026/08/27/this-former-pge-engineer-is-building-a-google-maps-for-the-underground/
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source: techcrunch
category: news/tech
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region: usa
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lang: en
published_at: '2026-08-27T15:00:00Z'
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updated_at: '2026-08-28T03:41:06Z'
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# This former PG&E engineer is building a ‘Google Maps for the underground’

## TL;DR
（要約なし・原文はリンク先を参照 / No summary available; see the source link.）

## Key Points
- (なし)

## Details
(本文なし。リンク先参照)

## Source
元記事: [This former PG&E engineer is building a ‘Google Maps for the underground’](https://techcrunch.com/2026/08/27/this-former-pge-engineer-is-building-a-google-maps-for-the-underground/) — published 2026-08-27T15:00:00Z