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Rare Isdera Imperator 108i flexes its considerable muscles

The Isdera Imperator 108i is a remarkably rare supercar from the late 80s and early 90s. Born of a Mercedes-Benz concept car, it's powered by a range of AMG-developed V8s, with five to six liters of displacement, depending on the engine. The example shown here, lapping the legendary Spa-Francorchamps circuit, features the most potent 6.0-liter V8 available. And rather than just being driven about on a perfectly clean racing line, it's freaking power sliding!
Yes, there's something eternally childlike about a wedge-shaped supercar from our formative years being flung about a Belgian racetrack. Adding to the appeal is the Imperator's stumpy, periscopic rear mirror, sticking out of the roof. Even after being out of production for 20 years, this is still a wild, wild car and we'd happily snap up the opportunity pilot one of the 36 Isderas that were built. Take a look below for the full video from Spa.

Cigarette Racing unveils the AMG GT S-inspired 50-foot Marauder

The Cigarette Racing stand at the Miami Boat Show this morning hosted the latest in the eight-year collaboration between Mercedes-AMG and Cigarette Racing: the AMG GT S parked next to the fast-boat it inspired, the Cigarette Racing 50 Marauder GT S Concept. The vinyl ester resin and fiberglass go-fast boat is more than a matching Solarbeam yellow paint job with the coupe that inspired it. Like other carmakers who have partnered with companies outside the industry - such as Nissan's recent tie-up with NASA - there's an exchange of technology involved; Cigarette said that working with AMG on composites and bonding helped them drop 1,000 pounds off the Marauder GT S Concept compared to the standard Marauder twin-engine, which comes in at 14,200 pounds. Customers who order standard Marauders can request the weight reduction (for a price), but we were told that unless they plan to spend most of their time above 100 miles per hour, the extra weight contributes to a smoother ride. Mercedes head designer Gordon Wagener penned the exterior paint job and worked with Cigarette to design the cockpit trim, which would have seen him in familiar surroundings: Cigarette Racing owner Skip Braver is a long-time AMG customer, and the boat company based its bespoke department on the AMG Design Studio in Affalterbach. Every one of its boats is handbuilt in its factory in Opa-locka, Florida using some of the same processes seen in automaking, like bar codes to track the progress of hulls and components, computer controlled paint samples with digital files that can be sent around the world for matching, and doing all the stitching in-house to keep tabs on quality control. The engine compartment holds two, nine-liter, four-valve, DOHC, quad-cam, twin-turbocharged Mercury Racing engines with all-aluminum blocks, each one of them good for an electronically-limited 1,550 pound-feet of torque, and either 1,350 horsepower or 1,550 horsepower depending on whether you run regular 91-octane fuel or 116-octane race fuel. So yes, that's 3,100 hp and 3,100 lb-ft at once, if you go all out. Mercury says they're the most powerful powerful emissions-certified gas-powered marine engines you can buy. The engines don't have knock sensors, though, so you have to turn a key to register the kind of fuel you're putting in, and you can switch from one to the other when two 150-gallon tanks are down to 10-percent full.

Formula 1 seeking independent engine supplier

Formula 1 could get a new engine supplier in the near future, if Bernie Ecclestone and the independent teams gets their way. According to Autosport, the FIA is soon to open the contract up for bids, and there are already several manufacturers that have expressed interest. Currently Mercedes, Ferrari, Renault, and Honda supply engines – both to their own premier teams (Red Bull and McLaren for the latter two) but also to other teams like Williams, Sauber, and Toro Rosso. Because the new turbocharged V6 hybrid power units cost those four suppliers so much to develop, they're charging their customer teams big bucks – around $20-30 million per season – to provide the engines. These costs are much higher than the $10 million or so it used to cost to purchase a V8 engine under the previous regulations. Ecclestone figures it's time to bring in another supplier who will not run their own team and not play favorites, but will supply engines to private teams at a lower cost. There are already a number of potential suppliers under consideration. One of them is said to be Cosworth, which has a long history in the series stretching back to 1963. The British firm stepped back between 2007 and 2009, returned in 2010, and dropped out again after 2013. The development could be of particular benefit to Red Bull, which has been unable to find an engine supplier and could be forced out of the series as a result. The team has long been powered by Renault, but that relationship has grown sour. And the other three engine manufacturers have not been forthcoming in offering an alternative arrangement for the team. Related Video: News Source: AutosportImage Credit: Cosworth Motorsports Ferrari Honda Infiniti McLaren Mercedes-Benz Renault F1 engine contract