For the future, could they use fiber (such as some of Corning's special fibers that are even resistant to severe damage) embedded in either the glass or a clear container, and then only two strands of copper for the power (with a super-capacitor/battery for energy backup if it ever looses power due to broken cable)? The fiber could have two paths, for redundancy, in case one breaks, but with Corning around, it would be easier to put more work into damage resistant fiber than upping that number of redundancy (maybe one from the top and one from the side, or one is more resilient than three more?)
In this way, it gets rid of the big black conduit.
Another thing they could do is use a material that is "transparent", such as holographic conduit that lenses the images through it.
And even they could do all three things.
I think there's a lot of things they can do with that big stiff conduit to get rid of it. I do believe a development cycle with Corning, holographers, and glass makers would take a few years even if it was given ample resources, so this may be a possible thing in the works for future. Whether they thought of that I don't know.
In general for all its communication, I still want to know about the car:
1. Is fiber with fiber transceivers cheaper than copper?
2. Is fiber with fiber transceivers as reliable as copper?
3. Is fiber with fiber transceivers LIGHTER than copper?
4. Could some of the fiber transceivers be eliminated through light-based logic boards? Yes, they exist, but they've been removed from the news and replaced with decades-old stories, so I think it was unclassified technology that has been classified, but that wouldn't stop a company from using it (look at Qualcomm who spent $2 billion to re-engineer what the military already had, and now we have smartphones; perhaps all along, Tesla wants this, but just doesn't want the military export law headaches that the smartphone industry HAD to go through).