Best infant car seats for HK taxis????

Hello, has anyone got a Cybex Aton Q infant car seat, and used it successfully in a Hong Kong taxi?

(My choice of infant car seat comes down to what is safest in a Hong Kong taxi. My research suggests that the Cybex Aton Q is the best option for US taxis, but I don't know if this translates to HK. And Cybex isn't available here anymore (the dealer pulled out), so I can't test the theory before buying. I'll just have to order from OS and take the punt that it's the best fit for HK taxis too, based on expert advice that it allows a European seatbelt routing path, is contoured to fit securely in a wide variety of vehicles, is more compact than other car seats (so good for cars with short seatbelts), and is better at preventing an infant's head from tilting forward than other car seats.)