That was the sound of a drone. Xu Xiangbei became alert immediately. On the highway, with nobody around, someone must have deployed a drone here specifically for him.
He realized he was being tracked by the drone.
He quickly shifted gears and hit the accelerator. The Porsche engine roared like thunder, and the speed shot up from one hundred to one hundred eighty miles per hour.
Whoosh, the immense thrust brought about intense excitement.
But what was shocking was that the bottom of the drone suddenly spewed a burst of fire, and the sound of the machine gun turret spinning echoed clearly in the air, accompanied by the sound of bullets hitting the roadbed like hail.
Xu Xiangbei broke into a cold sweat. If he hadn't suddenly sped up, he would have been riddled with bullets.
He hurriedly continued to shift gears, hitting the accelerator. The Porsche turned into a flash of lightning, and only when he felt he had shaken off the drone did he start to slow down.
