The new celebrity edition will premiere Monday, December 4 at 10PM eastern from a post on their Facebook page.

Discovery Channel made a Cash Cab revival now? What a shocking surprise because Mom LOVES Cash Cab and my aunt is also a Cash Cab fan too. I didn't know that a new Cash Cab game show existed. How great is it and would my mom like it?
Bestie

This thread is from a few months ago now. The celebrity edition aired 6 episodes in December and went away after that. I was really disappointed. Several bad changes, the amount of commercials was increased and there were only two contestant teams per episode instead of three. The mobile shoutout was removed and replaced with a social media shoutout where random fans would guess, not nearly as helpful to the contestants. The show became too focused on the celebrity (there were still regular passengers playing along) and the episodes were in general a lot raunchier. The episodes might still be on demand if you have Discovery, not sure though.