Probably on an open trailer because it is so heavy. That car was armored, in fact you can see a gun port and the configuration of the flat windshield, so I would expect the car to be 10k pounds at least... maybe a lot more. Finding an enclosed trailer to handle that weight and fit the car width might be tough in Europe... I don't know.
Of course, that brings up if the whole rig (truck and trailer) were up for the job. I would expect a gooseneck trailer and a dually truck to haul a very heavy and very expensive car around.