First of all, welcome to Pet Talk ... and your kitty is very pretty!
You've gotten great advice about the moving / introduction.... as far as the car ride, they sell disposable litter boxes at PetSmart and Krogers has them too. Maybe you could put one in the back floor of your car and let her out for a few minutes now and then?

Have a nice move, and we hope to see you back when you are settled in!