I just read your comment on my blog.
When my Dr. postponed my due date out of excitement I asked if I could drive home for Christmas. She first gave me the "what did you just ask look" & then said, "I can't tell you what to do. I will however say that you will need to stop every hour & walk. You can't sit in one spot for too long because it will stop the blood flow. You'll need to drink plenty of water during the ride. I'm not guaranteeing that this will prevent you from going into labor. In fact the only hospital between here & california is in Yuma, Az (hickville). So in the end the decision is yours."
Then I replied in a small meak voice. "ok I'll stay here for the holidays."