Transportation technology is moving at an extremely ____ pace these days. Ideas that once seemed like the ____ future are appearing in our ____ lives as something quite normal. It's quite common to ride in a ____ train, even if you don't realize there's no driver! And self-driving ____ are being tested as we speak. Soon we won't think it's ____ to see self-driving cars in our ____. I also predict they will use more alternative ____ such as solar power and ____

Technology - Level 5

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