I have a driving phobia as well. Let me ask, what makes your dad such a bad driver? Does he drive too quickly? Or is it that he is just a very nervous driver as well? If he is a nervous driver as I am....just tell him to drive slowly and stick to the slow lane. There is no rush to get to your aunt's house. After an hour and a half on the road, pull over and take a break for a good 10-15 minutes. Then do the same thing for the last part of the trip. Slow and steady. You both can do this but just don't become overwhelmed by feeling like you have to go at the pace of everyone else on the road. While in the car, find some soothing music. Delve into an interesting conversation with your dad....that will allow the time to pass as well.

If those options won't work, could you take a bus or train there?