You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Early Click-to-Call Case Study Yields Positive Results for Toyota Small-Scale Study Showed 17% Click-to-Call Rate, but More Research Needed By Alice Z. Cuneo, Published on June 06, 2007 0 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.