An autonomous delivery robot being tested in Pittsburgh. Snow, ice, hills and stairs everywhere: it was genuinely feeling dangerous as a human to go outside at times. Really a great stress test for the robots.

An autonomous @rivr_tech delivery robot being tested in Pittsburgh. Snow, ice, hills and stairs everywhere: it was genuinely feeling dangerous as a human to go outside at times. Really a great stress test for the robots. pic.twitter.com/P23OZcb53r

— Chris Paxton (@chris_j_paxton) December 24, 2025