Does any one think it would be a good idea to implement this with the Taxis and uber drivers as a way of tipping them. All they need is a small QR code and a small logo. Just a though. It could get wide spread easily. The coinomi app would make this easy.
You have a good idea that NYC can be used as a way to make small payments, but in the future the cash may be completely replaced by cryptocurrency, which has its own unique advantages.