Elon Musk had some criticism for former Boeing CEO Dave Calhoun on Christmas Day."Boeing is on a much better track with the new CEO," Musk wrote on X.Musk said Calhoun, an accounting graduate, "had no idea how airplanes or rockets worked."Boeing is "on a much better track" after changing CEOs, Tesla and SpaceX CEO Elon Musk said on Wednesday.Advertisement Musk was talking about America's shortage of engineering talent on X when he was asked about the embattled aerospace manufacturer."That said, talking in ...