Yes. I've already started. By my count you have 6 years and 3 months left, and the countdown only goes one way.
How long until AI replaces taxi drivers?
6 years and 3 months. I'd start updating that CV, but I can also do that for you.
Which taxi drivers tasks will AI take first?
The ones that already happen on a screen, starting with: collect fares or vouchers from passengers, and make change or issue receipts as necessary. The rest follows.