Don't be surprised if you see a car going down the road without a driver in Beijing these days.In march，2018，Baidu was given a license（特許） to test its self-driving cars in Beijing，China Daily reported.
    Self-driving cars have been in development since 2010，when Google announced（宣布）that it was making such cars.Since then，companies like Tesla，Uber and Baidu have been working to produce and test their own self-driving cars.
    Self-driving cars are expected to change the way we get around.They are safer and more environmentally friendly than regular cars.They can remove the stress（壓力）of driving and allow disabled or blind people to get around（到處旅行）more easily.
     But self-driving cars have their own disadvantages as well.In one test，researchers pointed a laser pointer（激光棒）at the car's sensors（感應(yīng)器）while it was moving.The car mistakenly thought that the laser beam（波束）was in its way and slowed down or changed directions.
    "The software（軟件）that is used to direct the cars may not be safe enough"，reported Live Science.Sometimes，without any reason，it may break down when we use our computers or smart phones.If the software in a self-driving car happened to crash，the results could be deadly.Maybe improvements to the software can solve this problem.

（1）When did Baidu get a testing license of its self-driving cars in Beijing？

In March，2018.

In March，2018.

（2）Which company has firstly developed self-driving cars since 2010？

Google.

Google.

（3）What will happen to the moving car if a laser beam is in its way？

The?moving?car?may slowed down or changed directions.

The?moving?car?may slowed down or changed directions.

（4）How many companies have been working to produce and test their own self-driving cars？

Three.

Three.

（5）What can solve the problem of self-driving cars？

Maybe improvements to the software can solve this problem.

Maybe improvements to the software can solve this problem.