This probably sounds silly but I wonder how much quieter the city might feel w/o the honking noise pollution.
I experienced 8 days of no honking in New York. I was staying in a hotel in Times Square on 9/11. We were unable to leave the city for 8 days and for those 8 glorious days there was almost no honking. Even taxis slowed down for pedestrians and waved us through.
After those 8 days, we took a train to Philadelphia and the traffic was hustling there as if nothing had happened in New York. It was amazing what culture shock we experienced. It took us 3 days to re-adjust to the hustle we had always known.