Really? I ended up with a couple of notes once, I was a bit worried about using it but the bus driver was just fascinated by them, very happy to see and accept

Really? I ended up with a couple of notes once, I was a bit worried about using it but the bus driver was just fascinated by them, very happy to see and accept them. They're very pretty, which I think takes the edge off the risk you take in accepting one. I can imagine different reactions, of course! Why would bus drivers specifically be hostile to them out of interest, it seems like it'd be no skin off their nose?