That's impressive!
It's a good idea to design the wings to be detachable.
It is a good job, that they are.
Andy is planning to partially 'fly' his latest creation on completion by adding them to the upper of the car.
I remember a certain trip to Huddersfield with a 'Concorde Casket' balanced on the laps of those in the back.
This is much bigger, so the wings need to be able to be removed.
Cheers,
Bigkev