Rolling, Rolling Robot

Originally designed for Mars exploration, this swedish sphere is going to be marketed for automated patrolling of large areas and teleoperated surveillance and inspection at remote and / or dangerous sites.
Rotundus the robot is suited for rough terrain, handling snow, mud, sand and water. It can travel 10km/h fast.

"A critical property of a spherical robot is how close the centre of mass is to its shell - the closer the more power."
The principles of the technology used to locomote the spherical robot is shown in an animation on the manufacturer's page.

(via)

I have to admire this elegant design! Those Swedes! I want one as soon as they figured out how it can serve a drink round bot too with those principles of locomation at work!
Maybe, with a compartment in it for a drink that would be shaken during delivery?