This is Tina's 2011 Mini Cooper Countryman. Installed in the trunk and underneath the vehicle you will find our Shocker XL 2-gallon train horn kit. The air system is installed in the spare tire well in the trunk, completely out of sight. And the horns are installed underneath the cab, keeping them hidden as well. Keeping the system completely out of sight definitely ensures no one expects the loudness of a locomotive to come from a vehicle of this size!