stomach flu and food poisoning are different things.
i once had food poisoing on the morning i was supposed to leave for vegas. the problem was, is that we had already paid for everything.
so after 6 hours of misery in bed / bathroom, my chick made me get in the car and go.
after 3 puking sessions in the car (we brought a nice size bowl for me), i started to feel waay better. by the time we got there i was feeling okay.
so the moral of the story is......go for a bumby car ride!