BMW Car magazine's March issue features what is likely to be the only 240 MPH, twin-turbocharged E60 M5 in existence. Put together by Currency Motor Cars in Westlake, California, this blown uber-sedan sports the aforementioned duo of turbos, acres of custom intercooler plumping and a modified exhaust that, when combined with what we'll assume is some pretty creative ECU tuning, creates an astounding 810 horsepower.

The car is owned by the company's founder, Ron Cash, and in addition to the substantial amount of work performed under the hood, Currency and Cash dropped another $100k on the interior. Can you say Florida Crocodile? We wish we couldn't either, but that's what's draped all over the inside of the M5. From what we understand, it's more attractive than we're imagining, but we'll have to pick up a copy of the mag to see how both the interior and engineering are executed.

[Source: M5Board, BMW Car magazine]