Because of her finicky system, whenever we go for long car rides, she loads up on the Dramamine and breaks out her sea bands. Side note: I am VERY skeptical about how something like sea bands could possibly work. Even with all that extra help, we almost always have to pull the car over so she can stand outside for a while, possibly holding onto something solid like a small rock until the uncontrollable urge to void her stomach becomes controllable. That is how it has always been - until this past trip to Tennessee over Spring Break.
When we set out, I was a little worried about how she would do on such a long car ride. She got all set up with her stuff, took the Dramamine, and we were off. After a little while, she was feeling as sick as ever, and it was only about an hour into an 8-hour drive. I encouraged her to try to go to sleep, so she tilted her seat back a bit and was out in under five minutes.
When she woke back up after forty minutes, she was perfectly fine! She had no issues for the rest of the trip, even through some really twisty roads going through Kentucky. This started me thinking - what if going to sleep while experiencing the rocking and bumping motion of the car acclimated her to it so that it didn't bother her once she woke up? Sort of like calibrating her inner ear sensitivity to have a higher tolerance for motion.
On the return trip, I recommended that she just go to sleep right off the bat, wanting to test out my theory. She slept for about an hour and a half, and then was perfectly fine throughout the rest of the long drive back to Michigan, never experiencing any carsickness at all. There has got to be some sort of reason for this. Ideas? Theories?