Wharton's Mollick used Opus 5.5 to build a US road-travel visualization site

emollick · x · 2026-11-03

Ethan Mollick had Claude Opus 5.5 build All Roads Lead To, a site based on 206,398 road links from US Census TIGER/Line 2025 data. It shows the fastest routes into every US city, the fairest meeting point in America, and the "watersheds" of major cities.

Details: speeds are estimated by road class (interstates 68 mph, other freeways 60, US routes 52, state routes 48, others 42), with no traffic or turn costs. Inspired by the defunct Arterial Mapping site.

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