For re-plumbing a home, 2 piece robot, 1 to dispense the pex while the other rides on it to anchor it at its destination and cut the old pipe out and retrieves

For re-plumbing a home, 2 piece robot, 1 to dispense the pex while the other rides on it to anchor it at its destination and cut the old pipe out and retrieves the piece to be discarded at the nearest safe point. Then the dispenser scoots up, cuts the pex, and connects it, possibly with some epoxy or a 3d printed connector or both. Rider robot uses lidar to plan next path while that is going on, until both robots arrive at their destination. Minimum of sheetrock repair needed, quick and easy, should last 15 years or so. $100 million and a team of dedicated and passionate engineers with the sole goal of seeing that come to fruition could pull it off in 7-12 years, maybe less depending on the number of geniuses you luck into.