The A Wall:* Calculating a 200-300km car route (or even shorter bicycle/pedestrian paths) could mean visiting over a million road segments, taking 10-20 seconds. For longer trips, this wait could become frustrating.
Radio 5 Live,·18 Feb 2026,·49 mins
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Nature, Published online: 25 February 2026; doi:10.1038/d41586-026-00294-5