Sounds a bit familiar to me... But my 5-month-old pup just begun displaying signs of motion sickness... He had no problem going with me to places, but now, suddenly from the day of his first rabbies shot, he vomits every time we drive in the car. This is sooo fustrating that I have, with a broken hearth, decide he can't go with me places anymore
Hope someone can give you a good advice and will be attentive to get one myself!