What problem does Tom have?

W:  Hi,  Tom. How are you?
M: Hi, Jane. I’m fine. Listen, I plan to go swimming in the sports center this weekend. But it’s a long way, and I haven’t got my driver’s license yet. How about us going together in your car? I’ll buy the tickets.
W:  Well,  it’s great,  but I’ve got homework to do.
M:   Come on!  It doesn’t matter that you go out for one afternoon.
W: Oh, I really can’t. Although I finished my book report, the upcoming mid-term exam really makes me nervous. I don’t think I’d enjoy an outing now. Sorry,  I can’t drive you.
M:  Oh,  don’t worry. I can find someone else. Good luck with your exam!
W: Thanks. See you
M:   Bye!