Travelling interstate with my cat

I am going to do the same thing.....travel with a cat! From what the pet shop said, there is a spray....feromones, helps them settle.
Hope this helps......

We often travel in our RV with a cat. We have a small harness & lead which we attach to something firm so that if we stop suddenly she wont shoot thru the windscreen. We found over the years that cats don't travel well in cat cages but like to see where they're going. Put in a kitty litter tray.

Also you can get tranquiller tablets which we give about 1 hour before leaving but only on the first day.
We've also trained this cat to come to a whistle by feeding her a little every time she obeys the whistleas in we let her off in quiet areas.

Hope this helps.