We watch "Gridlock" (Series 3, Episode 3) where the Doctor goes back to New Earth and takes Not-Rose to the place where 10 and Rose had their first date. Seriously Doctor? Whilst there, Not-Rose gets car jacked, the Doctor gives chase by hopping from car to car (not as exciting as it sounds though), the Face of Boe finally dies and we learn what the offspring of humans mated with cats look like (unfortunately, not as disturbing as that sounds).