Competitive International line-up in New Jersey and Rotax Max Challenge Grand Finals tickets go down to the wire Competitive International line-up in New Jersey and Rotax Max Challenge Grand Finals tickets go down to the wire Bas Kaligis / Friday, July 20, 2018 0 21582 Article rating: No rating The much-anticipated staging of the Rotax US Grand Nationals / US Open 2018 brought together a strong depth of competitors to contest each of the Rotax categories, where 120 drivers lined-up on the grid in the battle for the USA and Open titles, plus the chance to qualify to represent their country at the Rotax MAX Challenge Grand Finals in Brazil this coming November. Read more