Margaret,
Given the time that's past since you first posted this, perhaps feedback is either no longer relevent or no longer wanted, but I admire that you took the chance of putting it out here, so, for what it's worth....
I love the progression from hearing sounds to imagining the inner world of their source. The variety of images you conjur suggest how rich that journey can be. My favorite line is "cars idle, men in cafes rumble softly." Similar sounds and similar motions--or lack thereof, as the case may be.
I can offer some thoughts on where you might go from here, but given the time that's past, perhaps you would re-post to let me (us) know if the suggestions are still welcome and whether you'd prefer we read a revised version first.