I would like to see that Nexus come up with a solution for this! Their race box looks really good. A upgraded version of their race box could easily hold a wi-fi interface / router and more. I might just be dreaming, but it would be a really plus for their product range.
Then you need your laptop turned on for it to work. It is better to keep the wi-fi network going even when the laptop is turned off. A box like red box or others make this possible.