Hyundai’s electric air taxi startup Supernal has paused work on its aircraft program after a rocky few months that saw staff cuts and the departure of its CEO and CTO, two people familiar with the matter told TechCrunch.The shakeup comes at a time when Supernal has barely gotten off the ground — literally. The first test flight of its technology demonstrator happened earlier this year. And though Supernal has performed subsequent tests, the company was still working toward its first untethered test flight b ...