At last we will have a reason to go outside again.....
The device used is presently far from mainstream (he apparently combined a head-mounted display with the Kinect-like Xtion to create a custom AR HMD), but both 3D and AR Miku already have long histories – even the next version of Project Diva will include similar functionality, and Japanese researchers are also developing more effective ways of making her pout delightfully.
A version with vastly upgraded graphics would likely be none too challenging, and it seems only a matter of time before more advanced hardware and AR dating packages for various public and private locations and situations allow anyone to take their favourite virtual idol out for a date, or more......