Per the Boston Dynamics website the ‘Handle’ is:
Handle is a robot that combines the rough-terrain capability of legs with the efficiency of wheels. It uses many of the same principles for dynamics, balance, and mobile manipulation found in the quadruped and biped robots we build, but with only 10 actuated joints, it is significantly less complex. Wheels are fast and efficient on flat surfaces while legs can go almost anywhere: by combining wheels and legs, Handle has the best of both worlds.
Handle can pick up heavy loads while occupying a small footprint, allowing it to maneuver in tight spaces. All of Handle’s joints are coordinated to deliver high-performance mobile manipulation.
The all-electric ‘Handle’ can pick up items weighing up to 100 lbs (45 kg). The robot itself weighs just over 230 lbs (105 kg). With the grasping attachment shown in the video above, 11 lb (5 kg) boxes are being manipulated. Boxes up to 33 lbs (15 kg) can be accommodated.
These are much more likely the kind of robots we will first see working beside humans.