What a rear-end on the Wiesmann Roadster MF5! A turnkey version of the car is being launched at the IAA in Frankfurt. Wiesmann is a small manufacturer based in Dülmen, Westphalia. Limited quantities of these lovely, quintessential sports cars are produced there by hand. In contrast to the hard-top, the roadster's rear has pumped-up sides. As is the norm. at Wiesmann's, a BMW unit propels the open-top MF5. The familiar five litre V10 used in the M5 and M6 produces 507bhp, and top speed is a bit on the steep side: 310kph, around 195mph.The MF5 will sprint from 0-100kph (0-62mph) in just 3.9 seconds. Only 55 cars are to be built, each one costing 198,500 euros, 173,500 pounds.