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One lap of the web: A Lotus superbike, a track-only Z06 and a pair of M cars

Motorcycle News Lotus has licensed its name for this 200 HP superbike. Motorcycle News is reporting that Lotus, the beloved sportscar manufacturer that launched a thousand acronymic reliability jokes--"L.O.T.U.S, Lots Of Trouble, Usually Serious"--has lent its name to a 200 HP, V-twin-powered superbike that is to be manufactured by a new company. While it does wear a lovely JPS-style livery, it's not clear where the lightness has been added or if it's been simplified.

Alfa Romeo 4C Spider revealed: Geneva Motor Show

The Alfa Romeo 4C Spider (pictured) revealed in Geneva The Alfa Romeo 4C is the epitome of a modern ‘supercar’, with ultra light weight (for a production car) allowing the 4C to produce very good performance from its modest 17500cc engine. So producing an Spider convertible immediately raises the weight issue in a more dramatic way when the car’s abilities are so dependent on it low weight, but it seems the Alfa Romeo 4C Spider – previewed as a production car with a concept at Geneva today – has managed to keep the wight penalties of the convertible 4C down to a minimum. Thanks to a canvas roof and carbon fibre rollover bars, the weight penalty for the Spider is only about 60kg (around a 7 per cent gain) which shouldn’t hurt performance too much.

General Motors' small Cadillac will take aim at the BMW 3-series

The new Cadillac model that General Motors announced today will be aimed at the smaller models produced by BMW, Mercedes-Benz and other luxury brands. The rear-drive Cadillac is expected to be called the ATS and to arrive in showrooms in 2012 or early 2013, according to industry sources. “We will have a car positioned below the CTS in our lineup to compete with the BMW 3 Series and Mercedes-Benz C class.,” said Nick Twork, a Cadillac spokesman, during a telephone interview.