Shane van Gisbergen let the NASCAR world hear of his confidence ahead of the Xfinity Series race in Chicago on Saturday afternoon. Speaking with the media after capturing the pole for Saturday’s event, the reigning champion of the Cup Series’ trip to Chicago made sure to point out his Chevrolet is a fast one, comparing it to a rocket ship during his interview. “What an awesome start. The Kaulig Racing guys have given us some rockets. WeatherTech Chevy is pretty quick. I’ve kept it straight so far. I’ve got to do that in the race,” van Gisbergen stated. “These street circuits are tough, and eve…