The Aventador is 80 inches wide (outside of the wheels). I looked at a few different trailer makes (like Trailex) and the width between the wheel wells on the inside of the trailer is only 84 inches, leaving two inches of clearance on each side if the car is centered. With the car centered it is impossible to open the vertical door (width and height). The width issue could be addressed with a side door and the roof height could be raised.

If you have an Aventador that you haul in an enclosed trailer (preferably Aluminum construction that can be towed with a class III hitch/receiver), what brand and model trailer you are using? How much wheel clearance do you have and can you open the driver's side door inside the trailer?

Thanks.