"Didi Di-" A series of horns on the highway "rolled" out of the endless stream of cars like dropped beads one by one.

     "Why is there such a traffic jam, I'm almost late!" The girl in the back seat frowned, complaining constantly while looking at her watch. And my mother was also very anxious, and sighed helplessly: "No way, the traffic light in front seems to be broken, and it won't be repaired in a while." The girl didn't answer, she thought silently: If only our car could be reduced in size, Hold it directly in the palm of your hand, put it down in an open place, and then grow bigger again, that would be great... Thinking about it, she couldn't help snoring...

     "Dr. Su, your invention of the expanding and shrinking car has been successful!" Dr. Su opened his eyes sleepily, only to find that he was not in the car, but in a laboratory full of technology, with a Sky blue intelligent AI robot.

     "Are you talking to me?" Dr. Su asked in surprise.

     "I am Xiaowen, an intelligent AI robot invented by you, to help the doctor create a novel high-tech product - the expansion and shrinkage car. It is now X.X., 2051, Beijing time, and the research and development of this high-tech has been completed." road.

     "It seems that I have traveled to the future world for more than 30 years. Unexpectedly, I have become a doctor who creates new technologies." Dr. Su muttered in his heart. But I do not understand the use of this technology! By the way, I can ask the robot quiz. Suddenly, she found a cool sports car in the center of the laboratory, "Little question, is this a car that expands and shrinks?"

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     "Yes, the expanded and reduced car is 3 meters long and 2 meters wide. The body is made of a magical material - carbon nanotubes, which are 100 times stronger than steel and 100% safe."

      Then try it first! While thinking about it, Dr. Su came to the car, but found that the body was only a single red color, which was not good-looking. "If it could be colorful and fashionable, it would be beautiful!" She couldn't help but blurt out.

     "The exterior of this car is composed of a high-definition electronic screen, which can change colors and patterns. Press the square button on the car key to adjust the style. Since it is the first enlarged and reduced car, there are not enough styles available."

      Dr. Su nodded like a chicken pecking at rice. Then, she took off the car key, pointed the top of the car to the body, and pressed the button. A signal receiver on the top of the key was constantly flashing, and the electronic screen was constantly changing. Style, and finally, when the body turned into a gradient of rose red and grape purple, Dr. Su nodded with satisfaction: "That's it!" But after getting in the car, she immediately got into trouble, she didn't know how to drive!

      When Dr. Su embarrassedly told Xiaowen what he thought, it gave a disdainful mechanical laugh, then lowered the volume mysteriously: "Press the steering wheel button on the display, enter the desired place and You can press the "Finish" button at the speed you are used to." After hearing this, Dr. Su said without hesitation: "It must be a driverless car!" Xiaowen replied approvingly: "Smart!"

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     When the steering wheel automatically turned "gurulu", Dr. Su was very excited. She looked around and said smugly, "Ha, ha, our car is like a speeding red glow!" Suddenly, the car came in a hurry Braking, she leaned forward, looked around for a while and hurriedly asked, "What's wrong?"

     "At the scene of a major traffic jam, the traffic lights ahead are faulty, and it is estimated that it will be resolved in 40 minutes."

"The latest function of the car can be turned on immediately, 'increase and shrink', press the minus key on the key to shrink the car; press the plus key on the key to make the car bigger. Because this car It has the function of folding and retracting, so it does not become very small.”

      So, Dr. Su opened the door and aimed the top of the key at the body again, but——

      "Boom--" With a loud noise, the car exploded and disintegrated, and Dr. Su could only hear the constant alarm sound of Xiao Wen beside his ear: "DiDi, body failure, body failure, self-destruction mode has been turned on!"

     "No—" With a scream from Dr. Su, she suddenly returned to the real traffic jam scene.

     "Fortunately, it's just a dream!" she said with a sigh of relief.

     "What?" Mom asked in a confused voice.

     "Mom! I had a dream that I invented a shrinking car, which is 3 meters long, 2 meters wide, can change styles, and can drive itself! Just when I wanted to shrink it, it exploded. "

      My mother looked at the motionless traffic jam scene and said, "Son, this is just a dream. You will be able to improve it successfully in the future! In the future with increasingly advanced technology, I believe that your dream will come true!"