Yea, I don't think this is a good idea yet. However, train tracks might be a good option if you could get it durable enough but where having traction issues. The ~1m distance between rails is generally just wasted space and the US has ~400,000 miles of rail if say 20% efficiency over 1/2 of that distance that's ~320GWh per day which is a fair bit of power.

The advantage being rail lines need to trainsport electricity for electric trains, so you get dual use from those power lines.