I have driven home a functioning 55G from Pennsylvania before, and it was NOT easy. it was only a 9 hour drive, but still a long time for fish to be in coolers.
I drained almost all of the water out into colors and placed fish/snails/crabs/shrimp with the tank water. I placed corals in water that I brought with me from my own tank and rock went in plastic tubs with freshly made saltwater. I used a power inverter for water movement and a small skimmer in the fish cooler. There was also an anemone to deal with, and that got placed in a specimen container and put in the cooler with the fish. What little water was left in the tank stayed in there with the sand (the water was barely visible).
Once I got home, I kept the fish in the cooler overnight with a powerhead and skimmer running, put a powerhead in the totes with the rocks and put corals in my QT. I added new water to the tank with the sand in it, as well as some Prime and let it sit overnight. Next morning I did a 50% water change. (I had to make gallons and gallons of water ahead of time for this move). Placed all rock and corals in the tank and moved all fish to the QT. I waited til the next day, did another 30% water change and in went the fish. No issues. About a month later I upgraded the filtration system to add a sump and had that system running for about 2 years.
I moved two Percula clowns, a BTA, a ton of LPS frags, no SPS, 1 Coral beauty angelfish, 1Golden head sleeper goby, 1 scooter blenny and 1 flasher wrasse (never did get it identified, but looked like a Carpenters). All the fish survived the move.
From experience, I can tell you it was a lot of work and I would not do it again. I'm dreading just moving to the house next door now. If I were to move any distance, I'd probably break down my tank, sell my fish, put the corals and rock in totes and move that way. I wouldn't take fish or finicky corals.