From my previous post...(#1085)

I think a standard metered taxi can also be dispatched as part of the UberFlash beta program in Bangkok, although I've never gotten one in ~ five UberFlash bookings this month...

https://www.uber.com/en-TH/blog/bang...rflash-launch/

UberFLASH launched in Bangkok

“During this pilot project, we are accepting good quality taxi vehicles and allowing them to implement dynamic pricing via the Uber app,” she said.

So would expect a standard metered taxi, potentially also associated with Grab as the driver may be a bit more tech savvy, is a possibility with this Uber beta program. Although the taxi is probably rented in 12 hour shifts so shared among many drivers, and may not be a GrabTaxi at any particular moment.