This prisonor containment unit is an excellent prop for science fiction/dystopia roleplay. The prisoner is suspended within a forcefield, bobbing gently up and down with an exclusive animation, basking in the eerie green light of the forcefield emitters.
Also a transportation device, clicking the unit will toggle the "Follow" feature on and off, and it will follow its owner. The perfect thing for transporting that dangerous criminal!
This is a physical vehicle, and the prisoner must "Sit" in it, although a prisoner using Restrained Life may be "Force Sat" in it. (The Restrained Life viewer is currently a free download from an independent website.)
The vehicle will also follow the owner through flight. Since this IS a physical vehicle, it can become lodged against other prims, and the owner of the vehicle should take care not to travel to closely past obstacles.