Given a free hand in the design, his team developed a continuously variable transmission system that allows the petrol engine and electric motor to work separately or in tandem.

ECONOMIST: MONITORS: And the winners are... | The

In addition to the petrol engine and electric motor, the LF-CC hybrid drive system further comprises a generator, a high-performance battery, a power split device which, via planetary reduction gears, combines and re-allocates power from the engine, electric motor and generator according to operational requirements, and a compact power control unit to govern the high speed interaction of the system components.

ENGADGET: Lexus LF-CC Concept shows the future of touchscreen interiors

It combines a petrol engine with an electric motor which charges its batteries.

BBC: NEWS | Programmes | Breakfast | Low carbon family: "Green" cars

And a "petrol" aroma (it's really more a suggestion of motor oil than gasoline) is a badge of distinction among Alsatian Rieslings.

FORBES: Faking It

This Lexus Hybrid Drive powertrain features an all-new, ultra-smooth running, 2.5 litre 4-cylinder petrol engine mated to a compact, high-output, water-cooled permanent magnet electric motor.

ENGADGET: Lexus LF-CC Concept shows the future of touchscreen interiors

At best, the motor industry expects only a 15-20% further improvement can be squeezed from existing petrol engines and their transmissions.

ECONOMIST: Tech.view: Unbearable lightness? | The