I wrote to Green Cabs and asked them what they thought about the “0 SMOG” license plate. This is the response I received from Callum Brown (Managing Director):
I think it is a statement about the world the driver wants to live in as opposed to an advertisement about Green Cabs..
Possibly true but I still believe that it is misleading. On the other hand, I also think it’s not worth getting upset about and I have no intention of doing anything further about it.