Airwallex president Lucy Liu invokes a car metaphor to describe one of her company’s newest products. “It’s like assisted driving, like you have in a Tesla,” she says to describe T:0, an automated bookkeeping system that can run a company’s entire financial department on its own. “You still have someone in the driver’s seat, but the car really drives itself.” T:0 is part of a broader pivot for Airwallex, which got its start in Australia, and has emerged as a major global player in fintech and payments. Like platforms like Wise and Revolut, its business first grew alongside traditional industries…