Is this a joke? You might as well speculate in what tech Batman uses.I think Tesla will eventually need to split the service.
1. As a private drivers aid - probably $5k (or maybe on a per km subscription)
2. As a rideshare service, integrated into a platform (Tesla's or Uber/Lyft), but still requiring driver for supervision (for regulatory reasons) or to charge/ handle difficult areas. - maybe $20k
3. As a fully autonomous integrated rideshare service, including automated charging and a team of technicians who can take over - $$$$
First they need to actually deliver autonomy and get from 10-15 miles per disengagement to something closer to 100 000 miles. This will happen either by upcoming break-throughs in computer vision in the coming years or decades, or by adding more and better sensors with built-in cleaning. Probably both, and by 2040.