Runners and spectators alike taking part in the 2026 Boston Marathon Monday may have been fortunate enough to visit with the Optimus Bot from Tesla Inc, a humanoid robot set for future mass production. Unlike Chinese competitors in the humanoid robot space using races as a physical test, Tesla used the annual race as a marketing opportunity. Tesla Takes On Boston Marathon, Honor Takes On Half Marathon The Optimus Bot has attracted long lines at Tesla vehicle showrooms when it has been on display