Even if someone could travel faster than c, could he return before somewhere before he set out? Could she arrive at some intermediate destination before she set out? Draw a spacetime diagram representing this trip? OK. Obviously the first question is no because in a spacetime diagram your wordline would just get closer and closer to the x-axis the faster you travel. However, I am confused about the point of second and third questions. The second question is obviously no for the same reason, but what is it getting at? And how can you draw a spacetime diagram since it is impossible?