I would have agreed with the comments about the invisibility clock until I saw the Bond 50 years Top Gear special a couple of Sundays ago.
They took a transit and covered in TV screens. And whilst it was not perfect, it did sort of work. Looked very strange.
OK in Bond they took it too far with making it paint that siddenly becomes a TV screen, of course - they's what they do, but I would not have thought you could have got close until I saw that. Now it doesn't seem as stupid as it did when I saw it at the cinema... (Stil over the top, but less so)