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The 2014 Alpina B4 Bi-Turbo Cabrio powers up luxury and speed

The BMW specialists at Alpina know how to exploit a niche when they see one. With the BMW M4 still not technically official, it saw the need for a higher performance four-seat convertible than the 435i 'vert. Enter the new B4 Bi-Turbo Cabrio that is debuting at the Geneva Motor Show.
The European-exclusive model takes BMW's 3.0-liter, twin-turbocharged inline-6 and massages it up to 410 horsepower and 442 pound-feet of torque, which is less power but more twist than the M4 would give buyers. Alpina's tend to be built more as quick, luxurious grand tourers, and the B4 Bi-Turbo gets is no different with an adaptive sport suspension and an eight-speed automatic. Plus it wears the classic pinstripes and 21-spoke wheels that are the brand's design hallmarks.
While the added weight for the convertible means that the Cabrio takes 4.5 seconds to reach 62 miles per hour, about a half-second slower than the coupe, at the moment it is the only way to get this kind of performance in a BMW convertible. Orders for the convertible open in March in Europe and prices in Germany start at 74,800 euros ($102,878 at today's conversion rates).

2014 BMW Z4 offers minor refinements with a majorly orange wrapper

The redesigned BMW Z4 was rolled out onto the show floor at the Detroit Auto Show, with the example in question being an sDrive35is variant, with the just-less-than-screaming Hyper Orange Package. The exclusive colorway includes the metallic orange paintjob, as well as trim-specific seats, stitching and accents for the interior. More importantly, the 35is driveline means that you'll find a high-output version of the turbocharged 3.0-liter N54 engine, here outputting 335 horsepower and 332 pound-feet of torque, and a 7-speed DCT gearbox.
Two slightly less ferociously powered versions of the Z4 will be available for the new model year, too (both familiar). The Z4 sDrive35i is good for 300 hp and 300 lb-ft, while the still-potent sDrive28i features a 2.0-liter turbo four-cylinder making 240 hp and 260 lb-ft.
You'll fine some more details about the 2014 BMW Z4 in our original news story about the model here, or by scrolling down to read the full BMW press release.

Renderings may show upcoming BMW 4 Series Gran Coupe

We've already shown you spy images of the latest member of the BMW Gran Coupe family, the 4 Series Gran Coupe. Following the trend of the larger 6 Series Gran Coupe, the 4 Series variant grafts a spare set of doors onto its two-door body.
Now, the f30post forum has come up with what it says are patent drawings of the new 4GC (originally from Chinese site Autohome.com), giving a glimpse of what the coupe-sedan-thingy looks like without its camo in the way. What we're seeing is seemingly a mix of the 3 Series GT (noticeable around the rear window) with the larger Gran Coupe styling, while retaining the current 4 Series front end.
We can't say it looks great, but as these are merely renderings, it's far too early for us to come to a final conclusion on the overall look of the 4 Series Gran Coupe. Have a look up top at the patent images. We've also included our spy photos of the new Gran Coupe below. Let us know what you think of the latest niche product from BMW down in Comments.