The complete, unedited, Audi Press Conference at the 2013 Los Angeles Auto Show featuring the introduction of the Audi A3 and S3 with 4G LTE technology and the new RS models.
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https://www.youtube.com/watch?v=pc12hyS8QXE
The new Metrocab is driven by two independent brushless electric motors. A small petrol engine, coupled with a generator - the 'Range Extender' - is used to recharge the battery pack or provide power directly to the motors. Plug-in charging is also achieved via any mains outlet when the taxi is off duty. Zero-emissions in electric mode and regenerative braking all ensure a low fuel consumption through the course of the working day. Achieving over 70 mpg on the Public Carriage Office (PCO) Cycle, this technologically efficient taxi offers greater economic benefits for the driver and operator.
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https://www.youtube.com/watch?v=bdGQcztW-ZM