Hi Helene. Every dog is different but my experience with road trips has been good. The longest we've ever driven with our guys is 3 hours each way, so 6 hours round trip, and they slept all the way there. I made sure to feed them in the morning a few hours before we left so their tummies wouldn't be so full, and to avoid car sickness, and we made sure that they did their duties before leaving. We placed an open sleeping bag in the back of the car for them to lay on, and we stopped for a water and potty break along the way, and to let them stretch their legs. While we were driving, they slept. If Nyala is used to being in the car and she doesn't get car sick, she should be fine.