YOur dogs "fizz" and barfing is caused by him being stressed in a situation he is not yet comfortable. Short term fix may be the Thunder SHirt and once you have one you could use for other stress situations. You may for instance find he is stressed by thunder storms.
I would try giving him ginger and vitamen B tablets a half hour before you put him in the car. You can also try Bach's Rescue Remedy. Car sickness and fear of travelling in a car are shortlived stressors as dogs do get used to them reasonably quickly - some dogs quicker than others.
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