For most people their car would work fine, of course not everyone does drive. Sometimes cities will open "cooling centers" (school gyms, event venues, etc.) for those cases.
It takes a large amount of fuel to keep a car cool (or warm) compared to a properly insulated interior room in a properly insulated house. Cars have almost no thermal insulation to speak of, just sound deadening material, and they're made of thermally conductive materials.
It takes a large amount of fuel to keep a car cool (or warm) compared to a properly insulated interior room in a properly insulated house. Cars have almost no thermal insulation to speak of, just sound deadening material, and they're made of thermally conductive materials.