现在的城市交通拥挤不堪,地面上车流、人流如潮。尽管人们把马路扩了又扩,但是因为有钱买车的人越来越多,马路上还是天天会堵车。21世纪,我要发明一种空中管道马路,把马路用纳米管道铺设在高空。车子在管道中高速行驶,只有进出口设在地面上,管道内的汽车由卫星遥控,不会堵车、撞车。 Now the city traffic congestion, traffic on the ground, crowds. Although people have expanded and expanded their roads, traffic jams every day because of the increasing number of people who have the money to buy a car. In the 21st century, I am going to invent an air-duct road that will be paved with nano-pipes at high altitudes. Car in the pipeline at high speed, only the import and export located on the ground, the car within the pipeline by satellite remote control, will not be traffic jams, crashes.