For all who like to work outside the advantages are obvious, but there are almost disadvantages for, use a laptop outside means to introduce it sometimes and you never know what has been on the surface before you.
Openaire concept offers a viable solution, working outside, there is one case, writing desk and chair all rolled into one, the user can get the odd glance but they would just be jealous of your working arrangements.

These are detailed information about Openaire laptop case and workstation combo.
Openaire is a hybrid of a laptop carrying cases, workspace and Chairman. The system consists of a semi-rigid protective sleeve designed as an ergonomic laptop workspace and a protective shell that also functions as a comfortable armchair. Together, they offer portability and comfort to support work anywhere.
Source [Toxel]