Lamborghini and competitor Ferrari are more like Italian religions than brands, and the gusty engine rev never failed to elicit cheers from the relentless string of spectators lining the streets to catch sight of the unique convoy.

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Paddle-shifting the automatic transmission as you enter the corner, you'll hear the engine automatically rev to match the selected gear ratio blipping, it's called and the SL just rips along in a way no luxurious grand touring car has a right to.

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The engine started to rev as we taxied.

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That is not the case however and Quantitative Easing did in fact rev the engine just enough to keep more coming.

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Any team operating within the budget will be allowed to use movable front and rear wings and, crucially, an engine not subject to a rev limit.

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It must rev up its export engine despite high costs and open itself up at home to new efficiencies and more investment.

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This is the promise of the rotary engine, a century-old technology that stalled two decades ago but may rev again.

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