But one group of engineers have stuck their necks out and declared that a particular technology, the electric hub motor, is likely to become the most widely used drive system.

但是一组技术人员阔出去，他们公开宣布：电动轮毂电机——这种新型的科技有可能被广泛应用于动力系统中。

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Watch out too for a new six-seater Renault hybrid and a four-wheel drive Citroën with a diesel engine powering the front wheels and an electric motor operating the rear ones.

值得密切注意的还有，一种新型六人座的雷诺混合动力车和四轮驱动的雪铁龙，两个前轮用柴油发动机驱动，一个电动马达在后方作业。

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Toyota, in contrast, relies on a more complex hybrid architecture in which both the petrol engine and the electric motor can drive the wheels.

与此形成鲜明对比的是丰田公司的做法，丰田依仗的是拥有更为复杂的混合发动机结构的引擎，它能够使汽油发动机和电动机共同驱动车辆。

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Last week, the plant celebrated Spark EV motor production, marking the first time a major U.S. auto manufacturer has designed and built both a complete electric motor and drive unit for a modern electric vehicle in the United States.

ENGADGET: Chevy Spark EV rated most efficient retail car with 82-mile range, 119 MPGe

Each of the four wheels contains an electric motor, drive train, suspension and steering and braking mechanisms.

FORBES: Magazine Article

It consists of a GM-designed, coaxial drive unit and electric motor that together deliver 130 hp (110 kW) and 400 lb.

ENGADGET: Chevy details 2014 Spark EV: under $25,000, 0-60 in 8 seconds and a 20-minute fast charge