What are the main advantages? Well, firstly, PAVs 1 won't might have human drivers so there 2 won't might be fewer accidents. And PAVs fly. This 3 will won't be great for countries where the roads aren't good. PAVs 4 will/ won't be able to travel faster, moving at about 150 km per hour, so journey times 5 will won't be shorter.
But there are also problems. One disadvantage is that people like cars and 6 might not will want to stop driving. And if we have problems on the roads now, then in the future we 7 won't might have traffic jams in the air as well.