my sister had a long car drive while preg and she had to be in bed for a while as she was developing contractions...... due to the car movement and all.....

maybe making a few stops on the way......so you can get relaxed, stretch your legs and all......

I had made 4 hour trips while preg adn no problem at all and I was like 7 I think..... ...... and besides the drive we were shopping so I was walking, driving, shopping, walking, driving, shopping aaaaallll day!!