地下走行ならばあれこれ複雑な工夫をしなくて自動運転化が進みそう。
RT. 『Elon Musk hates traffic so much he wants to build tunnels 30 feet underground so people can speed 150 mph to their destinations. 』 https://t.co/zyF66ppjPR https://t.co/CI8ykEBjp4