Klaus Rader, a 63-year-old German entrepreneur and founder of the international restaurant chain L'Osteria, died on Friday in an accident during the Rally 550 Challenge Mallorca, when the Porsche he was traveling in fell down a ravine on the Ma-10 road, near Mortitx, between Pollença and Lluc, as confirmed by several German media outlets. His co-driver, Christina Ettel, a 39-year-old professional driver, suffered serious spinal injuries.