We like it when a car is the "fastest" something, so it stands to reason that we're excited by the 2012 Jaguar XKR-S Convertible ($TBA). Not just the fastest rag-top in Jaguar's lineup, the XKR-S is the fastest Jaguar convertible ever, featuring a supercharged 5.0L V8 good for 550hp, a 0-60 time of 4.2 seconds, and a top speed of 186 mph, as well as an aggressive front end treatment, suspension upgrades galore, a high performance braking system, and 20-inch wheels. Let's say it again: "fast". Feels good, right?
Sometimes luxury is superfluous when all you want is speed — and for times like those, the Caterham Superlight R500 (£42,000, roughly $67,000) is the car to have. Packing a ridiculous 263 hp — courtesy of a 2L Caterham Ford Duratec — into a svelte 1,100 lb. package, the R500 screams "race car," with an open cockpit, six-speed gearbox, carbon dash, nose, front, and rear cycle wings, carbon kevlar seats, four-point harnesses, 13-inch black cast aluminum wheels, a Momo steering wheel, and ventilated disc brakes, all of which combine to trim weight, resulting in a 0-60 time of just 2.88 seconds and a top speed of 150 mph. [Scouted by Jaskaran]
Mixing a powerful engine and race-ready components with timeless design, the Wiesmann GT MF5 Roadster ($TBA) is a unique drop-top that's sure to turn heads no matter where you drive it. Built atop an Aluminum monocoque chassis, the MF5 features a fiberglass body shell, front- and rear-double wishbone suspension, a mid-mounted TwinScroll Twin Turbo V8 cranking out 555 hp, a 0-62 mph time of just 3.9 seconds and a 19-inch rear wheels that power it to a top speed of 193 mph.