Our engineering background is limited. Maybe our readers could tell us if Tesla's founder's idea of a supersonic airliner (that takes off vertically and lands vertically just for added difficulty) is technically possible. Elon Musk has more ideas about transportation using electricity. In a recent interview, which seemed more like an outlined discussion than a true inquisition, the rock star of automotive manufacturing revealed two more ideas that involve using electricity to move people. The first is not that hard to envision. A pickup truck powered by electricity. We will address that in another story. The second, is a real...