Personally I'd find listening to race engines screaming all day incredibly soothing. But I guess not everyone feels the same.

As an aside, I love love love watching motorsport, but I often really struggle to stay awake! Honestly if you had to design a tv show for putting people to sleep, having a constant zoom-zoom of engines revving up and down in a predictable pattern whilst watching brightly coloured objects going round and round in circles, normally shown late at night, I don't know what you could better than F1. Love it, but it's better than a sleeping pill.