GoSun built a practical electric tractor that charges itself with solar panels [video]

发生了什么：Electric farm tractors are a great idea that hasn’t quite found a way to succeed in the market, but Ohio-based GoSun thinks the time is right to try again – this time with integrat…

为什么重要：它提示了一个值得继续跟踪的变化方向。

观察窗口：接下来观察它是否会引发更多同类动作，以及影响范围能否扩大。