The Unitree GD01 in its upright bipedal stance — the robot also drops to four limbs for improved stability on rough terrain.. Source: Photo: Unitree Unitree Robotics has launched the GD01, a rider-carrying robot it describes as the world's first mass-produced manned mech suit, starting at RMB 3.9 million — roughly $537,000. That's a significant correction from the $650,000 figure that circulated at launch; ChinaBizInsider confirmed the actual price alongside details of Unitree's concurrent Shanghai IPO filing. For now, it's a China-only story — no US or UK distributor has been announced. The machine The GD01 weighs around 500kg with a pilot on board and stands more than twice the height of an average person when fully upright. Its headline trick is transformation: the robot shifts between two-legged and four-legged movement, with the frame also tilting from vertical to horizontal for rough terrain. Bipedal mode mimics a walking gait; quad mode adds stability on uneven ground.…