It's carrying a dummy payload, Mr. Musk's old red Tesla sports car.

火箭内有载有虚拟负荷——马斯克的红色旧特斯拉跑车。

It'll carry a dummy payload weighing 1.5 tons, which is expected to enter orbit about 800 kilometers above earth.

它将携带重1.5吨的有效载荷模型，预计将进入距地球800公里的轨道。