The sexy apocalypse

We are Japanese high schoolers with supernatural powers. We are in a sexy version of the Christian apocalypse and we are trying to reach Zion, Utah. The last safe place on the planet because we were not chosen to go to heaven. That is the one place we know of that the demons aren't allowed to go, but we don't yet know why. With only a map, we left our homes in Los Angeles, California to begin making our way through the demon infested apocalypse to safety. We drove as far as we could, but need to find gas in the nearest town. We stop the car and see