The Audi e-tron, for instance, is an experimental sports coupe that relies on a battery alone to drive four electric motors-one for each wheel.

比如，奥迪的e - tron就是一款实验型跑车，这款车依靠一个电池为四台电动马达供电——每台马达驱动一个车轮。

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You don't get the usual rumbling of an idling engine, just the whisper-quiet whirl of the e-tron's motor (Audi is currently engineering an "e-tron sound" so that outsiders will be able to hear the car) and wind whizzing by.

ENGADGET: Audi A3 e-tron hands-on (video) Hands-on

Our Audi representative informed us that the e-tron performs very similar to its sporty TDI.

ENGADGET: Audi A3 e-tron hands-on (video) Hands-on

The A3 e-tron has similar level of sportiness to a Mini Cooper -- minus the feeling of being in a go-kart.

ENGADGET: Audi A3 e-tron hands-on (video) Hands-on