Bedrock Robotics CEO @bsofman explains how self-driving excavators could boost construction productivity by 80% while reducing workplace injuries and deaths: "Most contractors have a hard time filling even one shift, much less going two shifts or three shifts." "With these systems, you’ll soon be able to fuel up a machine at the end of the day and let it go an extra shift overnight, and now you’ve boosted your productivity by oftentimes 60, 70, 80%." "It also happens to be the most dangerous…