edit: Video of Jon getting out of his Nismo.
http://www.youtube.com/watch?v=kyy36SSkegM
6:16 is where you can see his Z.
Apparently his wife bought it for him (rocky marriage gift...). I was watching an episode just now on the kids' birthday, and he showed up to the park in a Nismo. This had to be at least a few months back (edit: Wiki'ed the show, Kids Bday is in May, so he at least had the car in May). They've got some good connections!