The idea is that corporate IT can deploy these thumbdrives to employees who can then run a secure, managed instance of Windows on a variety of PCs with a bootable USB 2.0 (or faster) port.
You're looking at Kingston's DataTraveler Workspace, a storage device that incorporates bona fide SSD technology not usually found in thumbdrives -- like a bunch of ultra speedy flash memory and a SandForce controller that supports TRIM and S.M.
Another interesting feature of Windows To Go is that Kingston's DT Workspace thumbdrives can be removed for up to 1 minute without crashing Windows -- the OS simply alerts the user to "keep the USB drive plugged in" and continues where it left off.