This is what I did when I moved from Vegas to MN.
We had a large Penske rental truck....you know...one of those long 24 footers? I just tossed her in the back and shut the door.
I had one cage that I found somewhere a while back and I put her in it in my apartment when I was taking stuff out. She was...ok with that I think. The thing is that it was too big to put in the truck up in the cabin. So...I just had a pillow and a blanket for her and put her up there, free to roam with me. I had her on some kitty drugs so she wouldnt freak out that much and it worked out pretty well I think. By the third day, she was sleeping right by my side. It was akward for her...I think she wanted to look outside, but there wasnt anyplace for her to really see and be comfy...so for the trip while she was awake...she just laid there in tha sphynx position with her head up.
The only problem was that she sleeped so much, she went on a sugar buzz all night long in the hotel. The second hotel we stayed at....there was a huge thunderstorm and she freaked out...never really any big storms in Vegas...at least not for the year and a half she was alive up to then.
The truck had big bench seats so I put a litter box underneath the passenger side and I put her food and water bowls under my side. I dont really know if she ever ate or drank anything during those three days...but she was perfectly fine when we got to the new place.
Hope that helps.