Car sick/nervousness??

Does anyone else's vizsla get very car sick? Ritz will vomit as soon as i put her in the car before i even start it up and will drool horribly until we get to wherever we are going and she is fine as soon as we get there. I take her somewhere almost every day to try to shake her from it, but it doesn't seem to let up.

I have purchased a "dog hammock" from petsmart that is waterproof and is keeping my seats cleaner from the drool and have found that as long as the windows are down she is pretty good and she does better with highway/interstate driving than the stop and go around the city.

Is this something from her being a rescue or particular to the breed???