Chọn đáp án sau  Travelling in the future will be much     and safer. People may  in a driverless car. Even old and disabled people will be able to use it, because the car can drive itself. However, a  car will be expensive. People can choose to go on foot on pavements. A Swiss company has  a system of high-speed moving pavements. People will go through the streets at up to 15 kilometres per hour just by standing on the pavements. This will  travelling time of pedestrians and traffic jams effectively. Therefore, more people will leave their vehicles home. driverless easier invented reduce travel  
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