A therapeutic mat is described. The mat provides therapeutic relief in the form of vibratory motion and/or heat. The mat or pad is particularly useful as a floor mat in a vehicle. The mat includes provisions to enable powering the mat from a 12-volt direct current source, such as used in an automobile or other vehicle. A massage module can be removed from the mat to facilitate cleaning of the mat. The mat may also include one or more upwardly extending provisions for massaging the arch region of a user's feet. Also described are illuminated mats. The lights of a mat can operate based upon the operation of another mat, pulsations of the massage module, or based upon acoustic levels in the vehicle.