That is still very expensive just for a 5 mile test track. I can't imagine a full implementation being reasonably priced if that winds up being the going rate.

While the tech being new does contribute to the cost, It is largely construction labor costs as opposed to engineering design costs as found in advancing silicon tech.

I don't even think the maintenance costs are included, nor the cost of land that is not in the middle of nowhere.

To me this is looking like project that could go well over *raises pinky* a billion dollars.

Exactly! And maybe just maybe it will put a little dent into the horrors of SoCal traffic.