For tiny apartment dwellers with limited kitchen space, this collapsible dish rack could be very handy. It's made of two separate pieces of plastic that fit together to make a dish rack when you need it. They can then be taken apart, laid flat and tucked away in a drawer when you're doing prep work and need the counter space.
I can't imagine it would be sturdy enough for pots, pans or heavy casserole dishes. But even if it can only handle the everyday stuff, the ability to tuck it away to clear the counter top or pull it out as a second dish rack when you've got a small sink and a lot of dishes to clean at once, I can see this being helpful.
It's just a design concept right now (from JillDavisDesign), but it could be a neat small-kitchen addition if it ever gets made.