Statistics about religious affiliation can be found at the Association of Religion Data Archives.
Use the Community Builder tool to examine demographic details for any given geography down to zip code level, including all houses of worship in each area. Use the US Congregational Membership tool to review profiles of county-level religious affiliation data (as of 2010).
Tennessee is divided into four transportation regions, as indicated in the graphic. There are director/engineer contacts for each region, if you happen to need highly granular information for your area. There is a wealth of transportation information available both on the TDOT website and at the TN Department of Safety and Homeland Security website.
There are also contacts for all of the main public transportation authorities in the state.
Remember also that the Census Bureau, through a number of its products, has a lot of data about local commute and travel flows.