Hi arader,
One of my dogs used to hate a ride and he drooled and panted all the way. I took him for short rides every day, in fact to a dog park where he could play fetch (he loved and still loves fetch) and he associated ride with fun within a couple of weeks.
I would suggest you just go in the car with a bunch of treats or dog bone or law hide along with your dog everyday, starting from short time, not even a ride, just sit in the car. Every time she gets in the car and sit on the back seat (I prefer to have my dogs in the back seat or in the hatch back, never on the passenger seat due to the safety reason) give her treats. Make it longer and longer. She will be chewing a bone on the back seat while you will be reading a magazine or newspaper. Make it as a routine after dinner or something. Once she gets comfortable being in the car, start with a short ride. Don't forget to treat her every time she gets in the car. This habit will help you tremendously later on, for example, if you want to go home from a dog park, your dog knows that she gets a treat when she gets in the car. All you have to say is "Lets go home!" and your dog will go to the car and wait for you to open the door.
Good luck
