Does Gajeel's motion sickness have anything to do with Pantherlily becoming his cat? In the Chariot event, Gajeel becomes motion sick without understanding the reason.



His case of motion sickness does not develop until the second day of the Grand Magic Games. So does this have anything to do with Pantherlily becoming his "cat"?
In the very same chapter when Gajeel still didn't understand why did he get motion sickness, Sting said to Gajeel (in Chapter 276, page 11) that "Well then... You finally got accustomed for it, huh... To being a real dragon slayer. Congratulations. Newbie."

We also know that dragon slayer magic can more or less change the user's body itself. So I assume that if a dragon slayer gets strong enough then they will get motion sickness on vehicles. (Not as if it would be important or anything, it's probably just funny.) Wendy doesn't have motion sickness only because she is too weak of a dragon slayer yet. Just as was the case with Gajeel before.

Also, Laxus doesn't have an Exceed partner as far as we know and he has motion sickness too (Chapter 276, page 12).