Self driving rideshare is several decades away at the very least, and no one has demonstrated how to get from A to B in an economically viable way. (Uber and Lyft surviving on the good graces of VCs while hemorrhaging money is not economically viable.)

Probably more realistic is when existing transport paradigms like the bus adopt self-driving vehicles.

Do they have to be self-driving? Because if you skip that requirement, e-bikes fit the bill. :) There are also electric velomobiles that are very pod like. https://www.youtube.com/watch?v=CURGm-BcaaM Main problem seem to be not protective enough hull so you risk being run over by texting drivers.

Does the bike appear on demand at your place and disappear from your concern after you take another transport?

Self driving pods are a huge gain over the status quo.

I think a 6 person mini-bus may be a winning format.