Nancy
I had to use an abductor brace for nearly 22 weeks before my hip revision. The brace was positioned at 60 degrees --so i could only sit or bend 60 ( rather than 90 degree). With this restricition I literally could not get into our front seat. I found setting across the backseat, with my brace against the seat and my other leg resting in the foot well, was the only way I could ride in the car. I sat my butt on the edge of the seat and scooted across, resting my back on a pillow against the opposite door. My husband and I figured out how to get the seat belt fastened, so as not to be ticketed. You may find this more comfortable for those long distance trips.
Wishing you a speedy recovery
Suki