Our daughter's rabbit, Calbert, arrived in NJ in March as air cargo from California at a cost of $150.00. He traveled in a plastic carry case that one sees for sale at any petstore, like Pet*Smart or PetCo.
Daughter added moisture laden vegetables (like Pam suggested), and a small box of feed, that had a slot cut into it, so that it acted like a"shaker" if the carrier and/or Calbert had occasion to move it about. She included a water bowl, with instructions to offer Calbert water if the flight were significantly delayed, taped prominently to the exterior of the carry case. His home address, phone numberandsimilar destination information was also attached to the exterior, as well as his veterinarian's health certificate. We were pleased with her preparations, and the care United Air Cargo gave Calbert, by bringing him into their offices at Newark International Airport, instead of leaving him in the cold cargo warehouse. His flight had been chosen so that his arrival would permit us to collect him without the necessity of leaving him at the terminal overnight, which could happen if one did not choose flight times appropriately.
We also have flown a rabbit in the passenger compartment of an airliner, Continental, I believe. Previous arrangements have to been made, as most airlines would only permit a maximum of two animals per flight. We had to provide a "soft" animal carrier, looked like a gym bag from Wal*Mart, that would fit underneath the seat and no problems at all were encountered. That flight only cost $60.00, but that was several years ago.
We frequently make the drive to Nashville, TN (1000 miles) with ourbuns. If I were driving to my destination, and had the room for cage(s), that would be my preference. None of our buns have seemed to suffer from the experience, and we usually have done it with four or five buns. Florida would only be another 500 miles or so, and maybe another day. I can't imagine that providing the buns any threat to their health and well being.Just don't leave the bun in the heat without air-conditioning. An extra ignition key would permit you to leave the locked SUV running, and safely parked if you leave it where you can see it during meal or gasoline fill-up breaks
Buck