Geneva Leakage: 2009 BMW Alpina B7 Bi-Turbo sneaks out

The 2009 BMW Alpina B7 Bi-Turbo will join the B6 GT3 race car on the stand in Geneva, and thanks to AutoZeitung, we've got a singular photo and some preliminary specs on the uber-sedan from Alpina.

The B7 Bi-Turbo is essentially the M7 BMW forgot to build, packing a twin-turbocharged, 4.4-liter V8 putting out 507 hp and 516 lb-ft of torque. Alpina claims the B7 can run to 60 in 4.7 seconds and on to an electronically-limited 173 mph. We'll have more details from the Geneva Motor Show next week, but expect a host of upgrades to join the engine mods, including uprated brakes, suspension components and a reworked interior to compliment the B7's new body kit.

[Source: AutoZeitung]