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This is a common problem and many people face this .This is called as motion sickness
as to whenever one travels he experiences these symptoms.If it is a long distance travel you could take a Tab DOMSTAL
one tab half an hour before you start your journey, this prevents vomiting
.Also keep your stomach light,as in do not over eat /feel heavy ad immediately set out.
If you have this daily,then avoid A.C cars/vehicles, drink some water whenever you feel the symptoms, allow fresh air inside the vehicle, lower the window glasses,you could also chew some lozenges,this helps a lot in controlling nausea