Proton Huber Competition's unique motorsport pyramid helps Former karting champ Robert de Haan test drive a Porsche 963 Proton Huber Competition's unique motorsport pyramid helps Former karting champ Robert de Haan test drive a Porsche 963 Bas Kaligis / Tuesday, November 11, 2025 0 49 Article rating: No rating Thanks to Proton Huber Competition's unique motorsport pyramid, Porsche Sixt Carrera Cup Deutschland champion Robert de Haan had the opportunity to drive a Porsche 963 from the FIA WEC at the rookie test (9 November). Read more