sp1814 - "According to the owner, the majority of the Asian drivers were born locally anyway!"
Indeed - I think the idea of asking for a 'local driver' is simply a way of pretending not to be a racist pig - even if clearly you are one!
"If it were me, and I had someone requesting a white driver, I'd let them wait an hour, 'due to exceptional demand'."
If it were me - since this is not a customer base I would be remotely interested in entertaining - I would simply not send a car at all, and if the customer rang back, I would advise that all my drivers, white and Asian, are refusing to pick you up because you are a racist, and they won't carry racists in their taxis.