Could be a marketing strategy by car/truckaddons.com to redirect to a 'Viper' product when the Powerlock tab is clicked on.
Powerlock Intl. - Thinking Security - Viper are totally seperate & independent of each other. Again ... there has been no contirmation from Powerlock that they are still in business or have parterned/merged with any other co. in the last 6 + mos.