Hi Denise - having had a carsick puppy, I sympathise! If you start a new thread, with travel sickness in the title, I'm sure you will get lots of helpful advice - what worked for Sophy (who would be sick almost as soon as she got in the car) was classic desensitising and counter conditioning. I spent many hours sitting in the car, with books and music for me and especially delicious chews and treats for Sophy. We started with just a few minutes, and built up, until she was able to sit in the stationary car without getting too anxious. Then I turned the engine on, and we sat. Then we progressed to driving just a few yards... It took some time, even with several sessions a day, but eventually we were able to go for short drives in reasonable safety - and I made sure they were always to particularly good places for dogs!
Sophy's problem was a combination of anxiety and motion sickness - getting her used to the car when it was not moving helped with the first; ginger (tablets or biscuits), a walk before travelling, not feeding close to travelling time, putting the dog crate in the least bouncy part of the car, driving very carefully and smoothly, and avoiding twisty routes all helped with the latter! Most dogs grow out of it, but some - like some people- suffer their whole lives. Sophy will still be sick if I drive too fast along the wrong kind of road, but most of the time I am careful and she is fine.
To sit with a dog on a hillside on a glorious afternoon is to be back in Eden,
where doing nothing was not boring- it was peace.
~ Milan Kundera