Leading Auto Portal Uses LoadRunner ActiveTest to Attain Critical Site Performance Mercury Interactive Corporation (Nasdaq: MERQ), the world's leading provider of Web performance management solutions, today announced that CarsDirect.com has adopted LoadRunner® ActiveTest(TM) for stress testing its consumer-focused automotive pricing and purchasing Web portal to ensure a positive end user experience. CarsDirect.com is a leading automotive e-commerce retailer and the first nationwide online service that puts consumers in control of the total car buying experience.