一道英语听力题W:what time will you have to leave to get to Shanghai

一道英语听力题
W:what time will you have to leave to get to Shanghai by early Monday morning?
M:well,I have to be there before nine a.m.to catch my flight.It's no more than three hours drive,so I can leave as late as six o'clock.
Q:How will the man probably go to Shanghai
答案是“By car" 可是我认为是”By plane"
一定要确保正确啊!