For those who babywear, how do u travel overseas in taxis with a baby? Do you really bring carseat along?

Yes. We bring our car seat along. I don't own a car. There are inexpensive new car seats (eg $99 for Mothercare brand). Taxis work the same way as cars. Should the car behind bump the taxi or should the taxi uncle e-brake, baby may be flung to the front of the taxi, your chin may smash into baby's head due to whiplash or baby may become your airbag. It's troublesome, hence I opt for bus/train where possible. Otherwise it's my infant car seat (Joie travel system at $360 for car seat plus compatible stroller) that comes along. Recently bought Cosco Scenera Next from Taxi Baby Singapore as my boy is outgrowing the infant car seat. The Scenera weighs only 3 kg and can take up to 18kg max.