Mercedes' new, phallus-faced roadster adds amuscled-up AMG version later this fall, with a potent5.4-liter V-8 under its strangely-sculpted hood. Themonster V-8 (which is normally aspirated) works with a7-speed automatic (with paddle shifts) to send thislittle two-seater from 0 to 60 mph in under 5 seconds,thanks to its 355 hp and 376 lb-ft of torque. Theusual bushel of AMG bounty--bigger wheels, a firmersuspension, stronger brakes, et cetera--is also onboard, all for a base price of just under $60,000.