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GM considers flagship sedan for Cadillac

Cadillac is considering a large, flagship sedan to take on the Mercedes-Benz S-class and BMW 7-series, a top General Motors official says. Mark Reuss, GM's president for North America, told Automotive News last month that a new flagship is on the table as GM maps its go-global strategy for Cadillac. A flagship would be a continuation of how GM has been positioning Cadillac's lineup to go head-to-head in each segment with BMW, Mercedes and Audi.

British EV prototype competes for $10m prize

A Silverstone-based company has emerged as the only British (and European) contender for the $10m Automotive X-Prize, a competition to find the most environmentally friendly car on the planet. Delta Motorsport’s E-4 Coupe concept has been accepted into the next stage of the X-Prize competition and the company now has to prepare a fully functioning prototype. Backed by an American insurance company, the X-Prize was set up to 'inspire a new generation of viable, super-efficient vehicles that help break our addiction to oil and stem the effects of climate change'.

Underground Racing Lamborghini cracks 250 mph--watch the video

Earlier this year, we told you about Underground Racing, a shop in Charlotte, N.C., that makes a business out of upgrading Lamborghinis with twin turbochargers to boost engine output to more than 1,000 hp. Now, a Lamborghini Gallardo Superleggera upfitted by Underground Racing cracked the 250-mph mark at the Texas Mile event. Car owner Richard Holt made the 250.1-mph run in late March, but video was posted just this week.