The BMW M-fighter from Lexus: the F

Deriving its name from Toyota's original code for the Lexus brand, the new IS-F harnesses 416 horsepower and reports a 4.6 0-60.

Motor Trend has the first look.

...the Lexus team unveiled their new black sheep at Laguna Seca racetrack. There, it took about, oh, two or three turns to realize the Nrburgring-tuned IS F is going to make serious trouble for the likes of the new BMW M3, the Audi RS4, and the Mercedes C63 AMG. The car is, quite simply, a monster: Acceleration is brutal, the brakes are wicked-strong, and handling grip is immense

Perhaps the F stands for Fire-breather. Or maybe Lexus is secretly dropping the F-bomb on BMW.