I might not want to lug the power cables and associated "brick" with me, but once I get where I'm going Im sure I'll need to charge the thing up again. I see what you're trying to get at, minimalist "bag" to fit the minimalist design of some fruit-based notebooks, but I just don't think such a thing would be practical. Not to mention I'd want my £XXXX laptop to at least have SOME padding while being carried about! Plus, it looks a pretty tight fit, not all laptops are created equal... PLUS! That aluminium handle looks uncomfortable to hold over a long period, where's the shoulder strap? PLUS! I'd use a carry case for transporting a laptop in a car... what if it slid out?
It looks shiny and very "apple", but it's seriously impractical.