um.
Click to viewum.
Edit: This is all pretty weird: aside from the obvious thing where US Miku isn't even out yet, and the complete non-sequiteur of using a character with no established American brand name, the site itself - here - is completely closed off from the rest of the Toyota site. Attempting to visit the Corolla page just takes you here instead. Bizarre.
Edit 2: The advert has been running on TV and has also appeared on the facebook feed for Miku here.
Source, via everyone under the sun.