S.G.
I just went on a trip 4 hrs away with my 6 week old who also has reflux. It went GREAT. The motion of the car calms refluxy babies. Also, ask your Dr. for Zantac for babies, IT REALLY HELPS, my baby feels soooo much better now, and try slower flow nipples and a formula for refluxy babies like Infamil gentle ease. Stop to feed and BURP once during the trip. Hope this helps.