[agoodthrowaway]

I used to live about 4 blocks from CA-17 (a 6 lane freeway) and when we’d leave the windows open a layer of black soot would form on the window sill after a few hours. I always thought that this soot was a combination of rubber from tires and diesel soot. When we moved away, we can leave our windows open and there’s no black soot. I’ve always felt like living near the freeway was like living next door to a heavily polluting factory.