It’s not long before you would actually roll up your laptop and sling it from your shoulder. Ah! Yes a fully foldable roller Laptop – THE ROLLTOP 
The designers have been working on this concept for several years and the prototype is now out. ( Check Below for Video Link)

The RollTop Would consist of a 

Flatboard. The main flat surface or the screen which could be folded into a laptop and made flat like a tablet. 

Base. The central unit on which the screen will be rolled on to. It will also feature a Loudspeaker and a webcam. 
Holding Belt/ Power cable. This smartly designed sling belt would also act as a power cable which will join the base unit to the power supply unit.

Check it out for more