Isn't this the same for all types of public transportation? I sometimes find BART very disgusting. If you ride it 11PM on a Friday night, the whole section reeks of drunken people smell. Not to mention, you sometimes see throw ups that never gets cleaned.

It also has a lot to do with competition and the self driving taxi market. If self driving taxi company A is consistently giving riders bad experience with dirtiness, then there's going to be a company B that will come out with cleaner solution.

If you think about it, there are far more places that's more disgusting than self driving taxis..