Upvote:1
This is possible at the main bus stations:
Lone passengers wanting to travel by car do have the option of a sharing taxi. At the main bus stations in Abu Dhabi and Dubai, taxi drivers offer single passengers the chance to share a taxi to the other emirate for between Dh40 and Dh60 each, depending on whether they have a four- or six-seater car.
(Source)
I found no door-to-door shared taxi, as these rarely work together.