Explore EPA smart location data

[smacmullan]

https://www.epa.gov/smartgrowth/smart-location-mapping
https://enviroatlas.epa.gov/enviroatlas/DataFactSheets/pdf/Supplemental/Numberofhouseholdswithzerovehicles.pdf

Data source for measuring "location efficiency" (housing density, land use, etc.). Might be usable for something.