That cage fits nicely in the car. So instead of using a carrier you can use it.
For a cage you can keep them in for a vacation that is easy to transport you can buy this one.
www.amazon.com/gp/aw/d/B00SK7HOUO/ref=mp_s_a_1_17?ie=UTF8&qid=1502917332&sr=8-17&keywords=bird+cages
I think I linked the same cage that I have, but you might want to double check that.
It is too tall for my cars, so I either have to lay it on its side or take it apart. It very easy to take apart. A little challenging to put together. It's also a good spare cage in my opinion. It can fit two glider comfortably and three is kinda pushing it.
Yeah I thought it was messed up that they kept Gizmo in that tiny little cage. When I got the poor thing he was underweight, over grooming, and had a huge fear of hands. Over time he gained some weight, his bald spots grew in, and he no longer feared my hands. I no longer have him because he did not get along with any of my gliders and he really needed a friend. He is currently living at a rescue in Arizona. He did begin over grooming on the trip down to Arizona.