Fisker will be displaying a concept convertible version of their Fisker Karma at the Detroit 2009 show this month. The concept car will be called the Fisker Karma S Sunset and it will be an EREV (Extended Range Electric Vehicle), which means it will run primarily on an electric motor, but will feature a combustion engine meant to generate power to recharge the onboard batteries. The combustion engine will probably be the same 260hp 2.0 litre turbo engine from General Motors. The Karma sedan can do 0 to 100km/h in 5.8 seconds, so this convertible will probably clock in at about 6 seconds or so thanks to its likely heavier weight thanks to extra reinforcement needed to compensate for having no rigid roof.
Fisker Karma to use 260hp turbo from GM