On Friday, Fisker fired back.
The company's powertrain director, Paul Boskovitch, said in a statement, "Our technologies and engine design have been fully tested and certified at the highest level."
He slammed Bereisa's conjectures as "irresponsible and ill-informed," and suggested that he was doing nothing more than seeking "media attention for unfounded claims."
Boskovitch noted that the Karma uses non-flammable coolant, that both the brake booster and the power-steering pump and their fluid reservoirs are located on the "cold" side of the engine.
He cited extensive heat testing done on Karma prototypes, including "thousands of miles of incident-free operation in Death Valley and Palm Springs, California," as well as sustained high-speed