There's no battery in this so if I remove the paper, it'll just go eventually.

这里面没有电池，所以如果我把纸拿开，它就会启动。

Some people may have missed it, but in this car, there is no motor, no batteries, no energy source, besides the wind itself.

有些人可能错过了，但是在这辆车里，除了风本身之外，没有电机，没有电池，没有能源。