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In 2014 and 2015, Winterbottom appeared in the season-opening two-driver round of the Stock Car Brasil championship, for Voxx Racing. In 2014, he drove alongside Sérgio Jimenez to fourth at the Autódromo José Carlos Pace whilst in 2015 he finished second with Marcos Gomes at the Autódromo Internacional Ayrton Senna. Just like Winterbottom, Gomes went on to win his respective championship title in 2015. Winterbottom returned to Brazil in 2018, finishing eleventh at the Autódromo José Carlos Pace driving with Átila Abreu, despite starting from the rear of the grid.