Well I took this as far as I could.
I was finally able to get in touch with someone within the transport department that approves cars for Taxi use. They sent me the application form for the vehicle but it's extremely detailed and the specifications are not something I can answer in regards to the details of the seatbelt and all the other specific details of the car. The only people who could answer these questions are Tesla themselves. And I was told that somewhere along the line as I tried to find the appropriate person in the transport dept, that I would need the Supplier's support to get approval.
When I forward it to one of the staff at Tesla, they came back with a response that said Tesla HK is not interested in a Taxi fleet. So that's the end of that.
I can understand their decision, they are trying to market it as a luxury sports car, so if there are some driving around as a taxi it could mix the branding message.
Maybe when the brand is more established they could look at it again. As other have said before, if you get a Mercedes Taxi, it doesn't stop you from liking Mercedes, but that's many years of branding already established in the minds of consumers.
In other markets that have Tesla Taxis, that's great!! I guess we will have to wait some time before that can become a reality in HK. (Minus the uber type users I guess...)