Originally posted by: bunker
When we lived in Atlanta we made many 12 hour drives to Michigan. Our daughter was between 1 and 2 for those trips. She was awake for most of the time, damn kid just wouldn't sleep (and I refuse to drug my daughter for something like that). We just had to make plenty of stops so she didn't get pissed off sitting there the whole time. Please don't try and make the trip in one shot, let her out at least once to stretch her wobbly legs.
Her bladder is still immature. It will be absolutely NECESSARY for you to stop several times. Stop at a rest area and let her play at the park with a McDonalds playland stop before and after. We stop 4-5 times on a ten hour car trip, I suggest you stop at lest three.
Really, it's a good idea. just try to get out of the *rush* mindset and take your time. Your niece will love you more for it in the end.