"Mother," said the boy Paul one day, "why don't we keep a car of our own?"

“妈，”有一天保尔说，“我们为什么不买辆车？”

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Some of these systems use radar to keep a car at a set distance from the one in front.

有些这种系统使用雷达让车子和前面的车子保持一定的车距。

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A lane-assistance system, which helps keep a car from straying beyond lane markings, is also considered level one.

车道辅助系统可以避免车子在行驶时越线，它也被视为第一级技术。

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An 11-year-old boy died of carbon monoxide poisoning after being overcome as he sat in a running car to keep warm, while his father was shoveling snow to get the car out of a snow bank in Boston's Dorchester neighborhood.

WSJ: A state-by-state look at the Northeast snowstorm

Car computers keep a record of the activities of all surrounding cars so they can quickly discard information about a car moving quickly in the opposite direction but track a car moving in the same direction around a corner and determine if it will soon be in the same lane as your own.

FORBES: Car Talk

South Wales Police decided to learn from last year's experiences and keep a particular eye on car crime.

BBC: Car thieves targetted but few arrests