I was refering to three passengers sharing. Versus two passengers sharing it's a cost decrease of 33%. Maybe over one time trip it doesn't matter much, but if you're doing it alot ,for many 33% of their total transportation budget starts to matter.

But the end goal is to replace a large part of private transportation. And with car occupancy of 3 passenger and a drivers ,maybe cars start to get special road rights(as a tool to decrease traffic - it's part of some future roads in israel).

At that point, with UBER running a large part of the traffic and being able to create optimal routes, together with special road right , the difference in delay might not be that big versus driving , and you don't need to drive.

Yes, there are many if's here, as in all visions. but it might come to pass.