Engineering

Local commuter train helps nuclear arms control researchers

With a new crisis seeming to dominate every news cycle, for now the threat of nuclear war has faded into the background of public attention. Yet the arsenals themselves have not vanished, and researchers at Princeton University ...

Energy & Green Tech

Hybrid leader Toyota turns on electrics

Toyota, which pioneered hybrid cars, unveiled Monday plans for its first global line-up of battery electric vehicles as other carmakers have pulled ahead in electrification.

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Automobile

An automobile or motor car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods. However, the term automobile is far from precise, because there are many types of vehicles that do similar tasks.

As of 2002, there were 590 million passenger cars worldwide (roughly one car per eleven people). Around the world, there were about 806 million cars and light trucks on the road in 2007; they burn over 260 billion gallons of gasoline and diesel fuel yearly. The numbers are increasing rapidly, especially in China and India.

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