Wiesmann GmbH is a German automobile manufacturer that specialises in hand-built custom convertibles. The company, which has its factory in Dülmen, was founded by brothers, engineer Martin Wiesmann and businessman Friedhelm Wiesmann, in 1988. The business was temporarily closed in May 2014, and following a buyout by London based investor Roheen Berry who took over as CEO, it is set to return with a new model, powered by a BMW M division-sourced V8 engine. The relaunch of the Wiesmann brand has more than one model, including an electric vehicle, in the pipeline and the pre-development phase of the car has been completed. A teaser video of the brand's rebirth, posted on their website, tells viewers to “expect the unexpected”, while showing glimpses of what could be the first car of the brand's new era.In its previous era, Wiesmann used BMW six-cylinder engines to power its MF models, until the introduction in 2003 of the GT MF4, which used BMW's 4.8-litre V8, and the MF 5, which used the M5's 5.0-litre V10.