Read the passage below carefully, and then choose the best answer:
Putting Cars on Autopilot
Automobile accidents are one of the leading causes of death each year. Accidents can occur due to drunk driving, mechanical problems, carelessness, or a whole assortment of other reasons. In the near future, these problems could be solved by eliminating the person behind the wheel. Driverless cars may soon be turning all vehicle owners into “backseat drivers”. Driverless cars are vehicles that use several technologies to operate without human input. Through GPS, they can find a location on a map and plan the best route to get there. They may also use radar to detect other vehicles and avoid them when necessary. One company involved with developing driverless cars is Google. It’s developing a software called Google Chauffer which powers the vehicles. The technology isn’t cheap though, as Google robotic cars contain about $150,000 worth of equipment. In 2012, Google began testing the cars on the road with a highly-skilled driver in the driver’s seat, and a Google engineer in the passenger seat. In case there are any malfunctions, the human driver can step on the brakes or turn the wheel to take control of the automobile. Other car manufacturers are also working on implementing automated options into their cars. For example, the 2014 Mercedes-S class offers advanced cruise control using radar, lane warnings, and even detects, and warns drivers when they appear tired. Many Americans seem open to the idea, as three states have already passed laws that make it legal for driverless cars to be on the road. Still there will be some stumbling blocks to overcome before the roads are controlled by digital decision-makers. Firstly, companies will need to provide proof that driverless cars were tested a lot and are truly safe. Automobile manufacturers will also have to find a way to bring down costs, as few people would be able to afford the equipment required. Driverless cars could also potentially become targets for computer hackers. If a hacker were somehow able to override the software system, they could cause accidents or malfunctions. There are also economic issues to consider. If driverless cars became successful, millions of truck, bus, and taxi drivers would likely lose their jobs. Despite these issues, all indications suggest that it should be just a matter of time before humans are no longer needed behind the wheel.
5. What is one reason why some people are hesitant to accept driverless cars?

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