Unitary's humanoid G1 suffered heat stroke during a mountain competition in China's Shandong Province. The route was about 3.9 km long and included over 3,100 steps and a height difference of about 600 meters. The overheated robot had to be removed on a stretcher. Such tests are much more difficult than moving on a plane: the android has to work intensively with its limbs and maintain balance, and the rarefied air does not contribute to cooling. The incident sparked a debate among engineers about the actual reliability of robots in harsh conditions.

Unitary's humanoid G1 suffered heat stroke during a mountain competition in China's Shandong Province. The route was about 3.9 km long and included over 3,100 steps and a height difference of about 600 meters. The overheated robot had to be removed on a stretcher. Such tests are much more difficult than moving on a plane: the android has to work intensively with its limbs and maintain balance, and the rarefied air does not contribute to cooling. The incident sparked a debate among engineers about the actual reliability of robots in harsh conditions.