"Virtualisation firm VMware has demonstrated its new mobile virtualisation platform, which allows two operating systems to be used at the same time on a single device. On stage at its European conference, VMware reps used a touchscreen Nokia N800 — more of a tablet computer than a phone — with a prototype of its hypervisor to boot and run both Windows CE and Google's Android, at the same time. The firm has yet to announce when such tech will be found in phones."
I suspect trickery... Look at the last screen in the video, where the earth is spinning in Android. The screen is refreshing strangely; there's some kind of brief flash every so often. Perhaps there's more VNC than VMWare in that N800.