At the risk of repeating myself, here's the pic I posted in another thread of the main two air ferry aircraft:

The Carvair is on the left and earlier Bristol 170/Freighter on the right. Though the Carvair had a larger capacity for cars (the Bristol only held three or four) and was more plushy for its passengers, it had a higher load bay, so that its cargoes/cars needed to be loaded via a hoist, rather than driven aboard as with the earlier Bristol Freighter, which made loading/unloading significantly slower with the later aircraft.
I remember on at least one occasion arriving early at Callais airport on the way home and the loaders practically grabbing the ignition key to drive the car onto the previous flight to fill a gap on the Bristol Freighter (my cunning father always chose a short car for that very reason

). With the Carvair, everything had to be much more pre-meditated, so your pre-booked flight was generally the one you actually flew on, but it was still much faster than Le Shuttle today (not a huge journey from Southend airport to our North London home, either, even without any M25 Motorway).
As for travel further afield, I seem to remember Grand Prix cars and equipment being loaded onto a Short Belfast at Heathrow for a South African GP in the mid-60s - perhaps the first time that happened, as there was quite a stir about it at the time, plus some cheery muttering about what would happen to the rest of the GP season if the aircraft crashed with all those valuable people and equipment 'in one basket'.