I used to always thank bus drivers. Then I moved to London, where the bus drivers are all soulless, dead-eyed, and hate their jobs almost as much as they despise people. I discovered very quickly that most London bus drivers won't give you eye-contact, let alone return your greeting or thanks.
I always thank taxi drivers though, it'd be awkward not to.
I always thank taxi drivers though, it'd be awkward not to.