Research Global Automotive Search Terms

This is a search popularity research project. I need an answer to the following two questions. 1. What is the top 10 most searched automotive brands? 2. What are the 5 top searched vehicles of those top 10 brands. For deliverables, I am expecting a list with the make and model of 50 automobiles. There needs to be details about the source materials along with some method for me to verify the results. NOTE: I have tools such as Google Trends and Google Insights for Search and I am looking for more precise information