Maybe you heard of it. I followed that project for quiet some time and it seems like they are slowly dying. At least the main developers left the project and the community has taken over.
I admit I am not into Monero so I have no clue about possiblilities but I though maybe it would make sense to adopt it in any way to get a working VPN based on Monero implemented to Monero itself.
Maybe no one cares, okay then, at least I tried. But maybe there is some interest and some people can talk to others who are involved and maybe interested in making something out of it.