Est. 1998 — 27 years of woodworking knowledge
This is being discussed on r/woodworking. I don't know what you call it, but several women have commented it was the best thing their husband ever built. They love it! Hmmm...IDK. I guess it would be a good way to make use of a gap space to provide storage; e.g., next to a refrigerator.
Opinions? Could the design be improved?
Not new, Peter. There are commercial units used inside kitchen pantry/closets. I've seen them in different widths as well as 2-tiered, with a spice rack in the upper section.
To me, a well designed corner closet in the same overall footprint would be more convenient. While the overall storage capacity may not equal this sliding option, I suspect it would be pretty close.
Paul in Hunt Valley, MD
In my opinion the non-adjustable shelves make this storage cabinet less useful. At least some of the shelf spacing must be adjustable. Here's a pantry I made for my wife. All the shelves are full extension, hold 100# and are height adjustable. 
@Paul Leuba, That's what I was thinking. I guess it boils down to what you're going to put in it. For smaller pantry-type items like canned goods, it's probably an organized and efficient way to store them, but unlike a normal corner closet, you can't put a broom in it.
It would be unusual to see in a home and probably be a conversation starter. And it doesn't look too hard to make and might be an interesting project for beginners. Heck, I think even I could make it. Maybe.
I like kitchy things. I recall a YouTube video of a high-end home where the owners installed, instead of normal cabinets, eight dishwashers under the kitchen island. WTH? The husband and wife said the dishwashers were cheaper than the price quoted by the cabinetmaker to install normal cabinets, so they went that route. They said they just think of them as cabinets that will wash whatever they put in them. A win-win. LOL
Added later 08 min 48 s:
@Lee Schierer, That's really nice.
I like Lee's pantry ... quite nice! A pantry requires adaptability and varying space which this definitely has.
The biggest issue I think no one has resolved is the dreaded "Corner Base" cabinet. I know a solution for it. Two under counter rolling carts. Or, leave the shelf and have a 12-year-old always handy for spelunking.
" Opinions? Could the design be improved?"
To respond to Peter's question:
This design reminds me of credenza layouts. Great for exposure and access, but rickety and waiting to fall apart into a nightmare. I would make one for spices next to the stove. Or, make a sturdy one for garage storage. We can never design something too sturdy. I grew up with picnic tables made from telephone poles.