A brush assembly for treating an exterior surface of a vehicle, comprising: a base portion; a treatment portion connected to the base portion, the treatment portion including a first brush portion having a first backing member and a plurality of wash media elements disposed on the first backing member; a movement mechanism including a controller in communication with a link arm portion to effectuate movement of the treatment portion towards a first position where it engages with a vehicle treatment and to effectuate contact between the wash media elements and the vehicle exterior; at least one spray nozzle disposed adjacent the first backing member of the first brush portion and configured to emit fluid away from the first backing member onto the vehicle exterior; wherein the plurality of wash media elements are disposed on the first backing member such that they surround the at least one spray nozzle and allow a fluid stream emitted from the at least one spray nozzle to pass through the wash media elements to the vehicle exterior; whereas the treatment portion is configured to move transversely with respect to the vehicle exterior to effectuate contact of the wash media elements with the vehicle exterior. a plurality of spray nozzles disposed adjacent the first backing member of the first brush portion, with each of the plurality of nozzles configured to emit a separate fluid stream so that multiple fluid streams are emitted at an angle away from the center of the first backing member. Characterized in that the plurality of wash media elements is secured to the first backing member such that a plurality of pockets is formed where none of the plurality of wash media elements are disposed; wherein the plurality of spray nozzles is configured to direct respective streams of high pressurized fluid away from the first backing member, through respective areas of the pockets and onto the vehicle such that the streams are substantially not obstructed by any of the plurality of wash media elements; whereby the plurality of pockets are configured to entrap the fluid emitted from the plurality of spray nozzles when the plurality of media elements contact the exterior of the vehicle. a base portion; a treatment portion connected to the base portion, the treatment portion including a first brush portion having a first backing member and a plurality of wash media elements disposed on the first backing member; a movement mechanism including a controller in communication with a link arm portion to effectuate movement of the treatment portion towards a first position where it engages with a vehicle treatment and to effectuate contact between the wash media elements and the vehicle exterior; at least one spray nozzle disposed adjacent the first backing member of the first brush portion and configured to emit fluid away from the first backing member onto the vehicle exterior; wherein the plurality of wash media elements are disposed on the first backing member such that they surround the at least one spray nozzle and allow a fluid stream emitted from the at least one spray nozzle to pass through the wash media elements to the vehicle exterior; whereas the treatment portion is configured to move transversely with respect to the vehicle exterior to effectuate contact of the wash media elements with the vehicle exterior. a plurality of spray nozzles disposed adjacent the first backing member of the first brush portion, with each of the plurality of nozzles configured to emit a separate fluid stream so that multiple fluid streams are emitted at an angle away from the center of the first backing member. Characterized in that the plurality of wash media elements is secured to the first backing member such that a plurality of pockets is formed where none of the plurality of wash media elements are disposed; wherein the plurality of spray nozzles is configured to direct respective streams of high pressurized fluid away from the first backing member, through respective areas of the pockets and onto the vehicle such that the streams are substantially not obstructed by any of the plurality of wash media elements; whereby the plurality of pockets are configured to entrap the fluid emitted from the plurality of spray nozzles when the plurality of media elements contact the exterior of the vehicle.