It’s also easier to get people to agree. In the US, people have been fighting the building of high-speed rail in California since the 1970’s, when Jerry Brown t

It’s also easier to get people to agree. In the US, people have been fighting the building of high-speed rail in California since the 1970’s, when Jerry Brown tried to build it the first time. 50 years later there are millions more people in California and infrastructure costs are astronomical. China will have 30,000 miles of high-speed rail before we have any. It’ll be interesting to see the benefits in China. Something to think about as your self-driving car navigates the congestion on US highways.