Heavy Metal RUSH: ‘Caravan’ / ‘BU2B’ Single Samples Available June 1, 2010 Atomm Leave a comment Amazon.com is streaming audio samples of two new RUSH tracks ? “Caravan” and “BU2B” ? at the links below.Source Amazon.com is streaming audio samples of two new RUSH tracks ? “Caravan” and “BU2B” ? at the links below.Source