The Doctor felt his face split in two at hearing what Martha remembered. It felt so good to not be the only one who actually remembered it. Having Rose not remember meeting him again and then loosing him again, but having a clone of him, and having to lose Donna and losing Jack once more.
"Oh that is good then. So I'm not the only one who remembers driving Earth home. Rose doesn't remember it, and if Jack doesn't know you then he doesn't remember it. Which means he also doesn't remember meeting the Master and all that." He smiled a bit softer. "Now all we need is our Smiths and Donna."