I was thinking more freight trains, and I forgot this article was about a success: https://arstechnica.com/cars/2018/12/mining-company-says-first-autonomous-fr

I was thinking more freight trains, and I forgot this article was about a success: https://arstechnica.com/cars/2018/12/mining-company-says-first-autonomous-freight-train-network-is-fully-operational/ https://arstechnica.com/cars/2018/12/mining-company-says-fir... It did take 10 years to build and cost 1.3 Billion dollars. And it is still being remotely monitored.