Today on our 2006 Mini Cooper we'll be test fitting the Thule Sonic Medium Rooftop Cargo Box with 13 Cubic Feet of space, Glossy Black in color, part number th634b. Now our vehicle is equipped with the Thule Rapid Traverse Roof Rack System so we'll begin our test fit by first placing the cargo box onto the vehicle's load bars. After positioning the clamps to fit over each bar we'll unlock the box… see more >