JMurray01- I remember reading that the cardboard is fireproof!
What this cardboard vax is trying to get to is that, you can replace parts cheaply and when you have had enough its entiarly recyclable- minus the hose and motor. When people moan about plastic vacuums always breaking then having to pay a huge amount , a cardboard pannel is going to cost so little. Its taking a new approach to building materials, mabye also allowing most parts of the machine to made in the UK? Who knows?
Anyone remember those vintage vacuums made of cardboard? They stood the test of time!