GLAM.........I may have an explanation (or a theory at least). I've been scouring the internet & it looks as though one of the largest Taxi firms in Malaysia are an Indonesian Taxi Company named BLUE BIRD TAXI'S. I delved further & apparently Malaysian Taxi drivers have a repution of being among the worst in the world safety, robbery etc. etc. & the worst reputation of all seems to lie with BLUE BIRD TAXIS. I'm almost certain that the Bluebird is not native to Malaysia, therefore the only association Malaysians have to a Bluebird are rather dodgy & dangerous Taxi drivers. Does that make sense.
...busy day at work obviously