Toyota's futuristic Concept-i, and more in the week that was

After years of anticipation, Faraday Future unveiled its "Tesla-killer" FF91 electric car this week -- and it's even faster than a Model S in ludicrous mode. Meanwhile, Nissan announced that its next-gen Leaf EV will be able to drive itself on the highway, and Toyota debuted a futuristic concept car that takes the wheel when drivers get sleepy. China is making a huge investment in high-speed rail to the tune of over $500 billion, and Israel is testing electric roads that wirelessly charge electric vehicles as they drive. Costa Rica has invested heavily in alternative energy, and it's paying off in spades: The nation 1.5 million electric vehicles a year. Israel is building the world's tallest solar tower, which will power 130,000 households once it's complete.