[car]

Maybe cut a slit across your concrete driveway with a diamond concrete saw and drop fiber in, seal with some polymer afterwards?

[jasonkester]

Yeah, it'd have to be something like that, and nomatter how well you did it, it'd be noticeable.

Fortunately, (as I mentioned in another thread,) I got a powerful enough point-to-point wifi connection to blast through the stone walls and get decent results.