Cheshire local Joe Marshall remains unbeaten in the Porsche Sprint Challenge GB this year after an imperious hat-trick at Oulton Park.<br>Changeable weather and safety-car interventions proved little obstacle for the Team Parker Racing driver who led every racing lap and extended his overall winning streak to nine.<br>“Motorsport isn’t usually like this so I’m just enjoying it while I ...<a class='more' href='https://www.autosport.com/national/news/marshall-lays-down-the-porsche-sprint-challenge-law-with-oulton-park-treble/10828286/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-ALL&utm_term=News&utm_content=uk'>Keep reading</a>