It boasts a fuel-injection engine made especially for the hot and dusty Indian climate.

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Thanks to the efficient turbocharged, common-rail, direct fuel-injection diesel engine, the concept car is still very fuel-efficient.

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Computerised fuel-injection has improved diesels' performance, and their inherent strength means they can be turbocharged to boost power even further.

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The move has been years overdo, auto manufactures moved to fuel-injection systems year ago for greater fuel efficiency, but NASCAR feared the change could open new doors for cheating.

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Engines are getting more powerful as they get more fuel-efficient, thanks to turbochargers and direct-injection fuel systems.

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Bolt comes with a trick-looking two-into-one exhaust system, which includes an oxygen sensor and exhaust gas catalyst that works with the closed-loop fuel injection system.

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It adopts the Atkinson cycle and D-4S direct injection technology to optimise both the power and fuel-efficiency benefits of Lexus Hybrid Drive.

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Perhaps a risk worth taking, Lord Turner is likely to argue, if it is a one-off injection of fuel into the flat engine of the economy.

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