Increasing customer database for Porsche Independent Specialist

We need to increase the number of servicing that we do. Anybody with experience in marketing in the automotive industry, especially high end cars like Porsche need apply. We are creating a new web site, printing flyers to place on Porsche vehicles, and listing ourselves on Yell.com etc. Also optimising our website on google search engine. If you have any ideas that have worked before or believe you can increase the number of clients we currently service, please apply. We are based in North West London on an industrial site.