translation.en: This is a little bit earlier version of it, that's why it's given the X designation, but it's a four-passenger aircraft that could take off vertically, like a helicopter -- therefore it doesn't need an airfield.
translation.zh: 这是一个早期的飞天车 所以它的标号有X 它是一个可以容纳4人的飞行器 而且可以垂直起飞，就像直升飞机 所以它不需要机场