VOA慢速英语:Truck Completes First Driverless Shipment: Beer

delivery – n. ​ act of transporting something to a person or place

interstate highway – n. a main road without stops that connects towns and cities across multiple states

relax – v. spend time resting or doing something enjoyable

autonomous – adj. independent, existing separately from other things

collision – n. when two vehicles hit each other in a crash

innovation – n. a new idea, device, or method