This is the Spyder, a back-to-basics sportscar from the small German manufacturer that uses the V8 from the current BMW M3.
With a kerbweight said to be under 1,000kg, the 0-62mph time is quoted as taking fewer than four seconds while the top speed should be around 175mph.
The latter could be 'interesting', as without any doors, a windscreen or a roof, the Spyder is by far the most extreme car to come from Wiesmann so far.
The firm is gauging the reaction it garners at the Geneva show before deciding whether to put this potential rocket-ship into production. If they do, don't expect to see it before 2012.