Sorry, as I have only just joined the forum, I may be a bit late in answering. But here are my two cents' for what they may be worth ... My puppy also used to be sick in my car every time I took him out. Then I had to go on a long trip (5 hours) and the puppy had to go with me, so I went to the vet for advice. She was unwilling to give me any medication for him because he was still only a couple of months old, but she recommended acupuncture! So we tried that - and it worked a treat! He has never been sick since!