Yet it is far from certain that there is enough demand for all these supercars.

ECONOMIST: Luxury cars

Even had we included those supercars, though, the Jeep Grand Cherokee still would have topped the chart.

FORBES: Vehicles

Meanwhile, McLaren is showing what promises to be a new benchmark for supercars.

FORBES: The 8 Most Important Vehicles From The Paris Motor Show

Ferrari is unlikely to leave the sport, because its image as a manufacturer of supercars is intimately tied to its racing heritage.

BBC: What does BMW's exit mean for F1?

Ecclestone, meanwhile, is working to install the Australian touring car category V8 Supercars as a support event for the 2010 Singapore Grand Prix.

BBC: Formula 1 gossip and rumours from international media

When he isn't tinkering around with McLaren F1 supercars and Batmobiles, Gordon Murray is working on fuel-efficient -- or even fuel-independent -- city cars.

ENGADGET: Autocar takes Gordon Murray's T.25 and T.27 city cars for a spin, gives us its impressions

In addition to taxing motoring directly, Italian authorities have also been specifically targeting the owners of Ferraris and other supercars to check that they are paying enough tax.

BBC: Ferrari and Maserati sales decline in Italy

She also has 110 supercars parked in her garage.

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And the strength, lightness, high melting point and ability to resist corrosion of titanium make it an ideal material for building aircraft parts, supercars and medical implants but it can cost 50 times as much as steel.

FORBES: What On Earth Is The Economist Talking About Here?