beau, I think what you've written down with regards to stopping and getting bub out for a bit, applies to you also.

Sometimes i found that being in the car for a couple of hours was fine, other times I couldn't handle a 2 hour trip without a few stops to get out and strecth my legs or even sit in a different position. Maybe don't let it drag on for too long when you feel the need to have a stretch.

Nic